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<h2 class="text-lg font-semibold">Head Office</h2>
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Desa Kawasi, Kecamatan Obi, Kabupaten Halmahera Selatan, Maluku Utara.
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<div class="hidden md:flex text-xs"><a href="mailto:corporate.secretary@haritanickel.com" target="_blank" rel="noopener noreferrer">Corporate Secretary: corporate.secretary@haritanickel.com</a></div>

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At first glance, coral reefs may appear to be nothing more than colorful rocks beneath the sea. In reality, they are the foundation of marine life&mdash;providing food, shelter, and protection for more than 25% of the world’s marine species.
Indonesia is home to the largest expanse of coral reefs in the world, covering an estimated 51,000 square kilometers&mdash;around 18% of the world’s total coral reef area, which spans approximately 284,300 square kilometers. Even more remarkable, Indonesia is located within the Coral Triangle, making its reefs not only vast but also incredibly diverse.

<h2>What Are Coral Reefs?
</h2>
<img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdksuvanOK9BdohBoM8ja6CfoS7kuG0jVWApfEIBmlvIHubtd07phCmAFlz1RsoRzNfaH__RyDiFOeUeteTg7COvOBQm3-YlPmOY9mMA1JHqkBhO2oYJhNYYVHlgzKkPbzhV5P0EQ?key=nlx1vo2Wq-X-DoaEvZa2wcCQ" width="624" height="465" style="margin-left:0px;margin-top:0px;">

Coral reefs are natural structures formed by colonies of tiny marine animals called coral polyps, which live in symbiosis with microalgae known as zooxanthellae. These colonies deposit calcium carbonate as they grow, creating the hard surfaces that serve as a habitat for thousands of marine species.

Interestingly, coral polyps belong to the phylum Cnidaria, which also includes jellyfish&mdash;making them distant relatives!

<h2>The Ecological and Socio-Economic Value of Coral Reefs
</h2>
Coral reefs provide vital benefits to both marine ecosystems and human communities:

<h3>1. The Ecological Benefits</h3>
<ul><li>Biodiversity hotspot
More than 25% of marine species&mdash;including fish, mollusks, turtles, and microorganisms&mdash;depend on coral reefs for survival.
</li><li>Coastal protection
Coral reefs help break the force of waves, reducing coastal erosion and protecting communities from tidal flooding. Studies show that reefs can dissipate up to 97% of wave energy.
</li><li>Ecosystem balance
Coral reefs play a key role in the marine food chain and nutrient cycling.
</li></ul>
<h3>
2. Socio-Economic Benefits</h3>
<ul><li>Livelihoods for coastal communities
Many local fishermen rely on fish species that inhabit coral reefs.
</li><li>Marine tourism
Destinations such as Raja Ampat, Bunaken, and Wakatobi are renowned for their spectacular coral reefs, creating significant opportunities in tourism and boosting local economies.
</li></ul>
<h2>Types of Coral Reefs
</h2>
Coral reefs are generally classified into three main types:

<ul><li>Fringing Reefs
Found along coastlines and accessible, these reefs are popular snorkeling sites.
</li><li>Barrier Reefs
Separated from the shore by a deep lagoon. The Great Barrier Reef in Australia is a famous example.
</li><li>Atolls
Circular reefs that form around sunken volcanic islands, often enclosing a central lagoon.
</li></ul>
<h2>Harita Nickel’s Commitment to Coral Reef Conservation
</h2>
As a mining company operating on Obi Island, Harita Nickel recognizes the critical role marine ecosystems&mdash;particularly coral reefs&mdash;play in maintaining environmental balance. The company is committed to actively contributing to their preservation through various ongoing initiatives.

<h3>1. Coral Reef Restoration Program</h3>
<h3><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXddye5Xa7TVJ7Ne7FHnIgbp9e4kC9w0S3NfP9MF2yCrW3YtiQ-Ais2iqXRbLS1bi0Go-xLK6z4miEiBD5JncG-bSJs1PxQb1enGt_tQ-3JWIUxvQhUfM0unQzooLrjx2uuHXySanQ?key=nlx1vo2Wq-X-DoaEvZa2wcCQ" width="624" height="469" style="margin-top: 0px; margin-left: 0px;"></h3>
Since 2021, Harita Nickel has been developing <a href="https://tbpnickel.com/media/news/environment/restorasi-terumbu-karang-harita-nickel-jaga-kelestarian-ekosistem-perairan-obi">reef cubes</a>&mdash;hollow concrete blocks made from a mix of cement, nickel slag, and fly ash&mdash;that serve as artificial substrates for coral growth. By the end of 2024, a total of 1,871 reef cubes had been deployed on the seabed.

Harita Nickel’s Environmental Marine team conducted observations from October 2022 to December 2024 and reported that natural coral growth ranged from 0.93 cm to 6.64 cm&mdash;well above the average natural growth rate of 0.3 cm to 2 cm per year.

In addition, 136 species of reef fish from 61 genera and 24 families were recorded in the coral restoration areas.

<h3>
2. Protecting Obi Island’s Marine Water Quality</h3>
<img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXerO_JIeabJTXPyu6QPfAPLm1dZ3YN96PONLNd0GxtOKeyJmWhy4PdYZHTn7H5qY-GNXActjUkLH7um7cSjgqS5VyihHgH0SdnANyy1RQpzODuOy7y_8ieEkd6ks4ep2nm1l8jwIQ?key=nlx1vo2Wq-X-DoaEvZa2wcCQ" width="624" height="351" style="margin-left:0px;margin-top:0px;">

Harita Nickel does not discharge production waste into the sea. Instead, the company has built sediment ponds to filter runoff water from mining operations, preventing excessive sedimentation that could harm coral reefs.
<h3>3. Routine Marine Environmental Monitoring</h3>
<img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdUny9sXslSwKNNDD4IOIfpWPu_Yk4WIsVjy67aFsGPDrIEJCbRibk0Z7UNR6vrRahxy7-gkRq8fFvtdcVdjc2_O69xjZ4hBbAAvSsQysbW9OUJgH6rPhLS0mqSo5DU3jye5ozL?key=nlx1vo2Wq-X-DoaEvZa2wcCQ" width="624" height="407" style="margin-left:0px;margin-top:0px;">

Harita Nickel’s dedicated Environment Marine Division is tasked with ensuring that the waters around Obi Island remain in good condition.

The team conducts daily, monthly, and quarterly monitoring of marine conditions. Every six months, the company also partners with independent experts to conduct comprehensive water quality testing around Obi Island.

Through this monitoring, Harita Nickel can identify potential risks early and implement corrective actions to help maintain the health and sustainability of the local marine ecosystem.

<h2>Coral Reefs&mdash;A Precious Marine Legacy to Be Protected
</h2>
Coral reefs are not only essential for life beneath the waves but also for human well-being. Through collective conservation efforts by local communities, governments, and responsible industries such as Harita Nickel, we can help safeguard these vital ecosystems for generations to come.

As a nation blessed with extraordinary marine biodiversity, Indonesia carries a significant responsibility to serve as a global steward of coral reef conservation.

Coral Reefs: Definition, Benefits, and Harita Nickel’s Role in Their Preservation

Indonesia is home to the world’s largest reserves of nickel ore &mdash; a mineral that plays a critical role across multiple industries, from stainless steel production to electric vehicle batteries. Yet, nickel does not occur in nature as a solid metal. Instead, it is found in the form of nickel ores, of which there are two main types globally: saprolite and limonite.
Although both ores originate from the same rock weathering process, saprolite and limonite differ significantly in terms of composition, color, depth of deposit, and the technologies required for processing.

Here, we take a closer look at the key differences between the two!

<h2>Saprolite Nickel Ore
</h2>
<img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXeBgh3b8Nf1MU56bnreMhIcWmVZGKSuI5DHy4jenJFMyAAatFW5yyUbMa00JcFnAYdsDXghW2HQNpNSen3d5KoBy6aRzuDKLAAchJ6LtGuUg-mUoBuJ7dCgvU5nbtu_Sx_LY5I60g?key=_-2XJStQ4HN4CsGWPPhtHbAU" width="624" height="416" style="margin-left:0px;margin-top:0px;">

Often referred to as "high-grade nickel ore," saprolite typically contains between 1.5% and 3.0% nickel.

Due to its higher nickel content, the extraction process for saprolite ore is comparatively more efficient, utilizing smelting methods such as Rotary Kiln Electric Furnace (RKEF).

However, saprolite deposits are located in deeper layers of the earth’s crust, which presents greater challenges in mining.

The primary product derived from saprolite ore is ferronickel&mdash;an alloy of iron and nickel&mdash;which is a key raw material in the production of stainless steel.

<h2>Limonite Nickel Ore
</h2>
<img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXdPX25kR57pqY8FJRVKRg5FC9ZZagZRXFqxYO5qItQ1hvlWR2tY9KhWZoYUWxCvPzkIblG1hV1_K-7SdGQjnhNcEQmHtTrz2svauP6SysLHTHgTLIq83icXD1yXOUcDNQvhfGDv7A?key=_-2XJStQ4HN4CsGWPPhtHbAU" width="624" height="416" style="margin-left:0px;margin-top:0px;">

Limonite is generally classified as "low-grade nickel ore," with nickel content ranging from 0.8% to 1.5%. However, limonite ore also offers distinct advantages due to its cobalt content, which typically ranges between 0.1% and 0.2%.

Processing limonite requires more advanced technologies, such as High-Pressure Acid Leach (HPAL)&mdash;a method that involves leaching the ore with heated sulfuric acid to extract valuable metals.

The result is Mixed Hydroxide Precipitate (MHP), a solid mixture of nickel and cobalt, which can be further refined into nickel sulfate and cobalt sulfate for use in various industries, including battery manufacturing.

<h2>Nickel Ore Processing at Harita Nickel
</h2>
Harita Nickel is not only engaged in nickel ore mining but also the integrated processing of ore into value-added products. All operations are conducted on Obi Island, located in South Halmahera Regency.

As of August 2024, Harita Nickel’s latest refinery facility has been fully commissioned and is now operational, following the completion of the company’s RKEF smelting facilities in 2023.

Today, Harita Nickel operates a total of 12 RKEF production lines, with a combined capacity of 120,000 tons of contained nickel in ferronickel, alongside 6 HPAL production lines, with an equivalent capacity of 120,000 tons of contained nickel in MHP.

A clear understanding of the distinctions between saprolite and limonite nickel ores highlights the complexity of modern nickel processing&mdash;from the inherent properties of the ores themselves to the advanced technologies utilized.

At Harita Nickel, this process is carried out through an integrated and sustainable approach, delivering high-value nickel products while prioritizing environmental responsibility.

A Closer Look at Nickel Ores: Understanding the Difference Between Saprolite and Limonite

Harita Nickel concluded its 2025 World Environment Day (WED) commemoration series with the Harita Youth Forum, an educational initiative aimed at engaging the company’s younger generation. This year’s forum carried the theme “SDGs and Responsible Mining” and was attended by over 200 participants from various Harita Nickel business units operating on Obi Island.
The event featured Dr. Tri Edhi Budhi Soesilo, M.Si., a lecturer from the School of Environmental Sciences, University of Indonesia, as the keynote speaker. In his presentation, Dr. Budhi emphasized the critical importance of integrating the Sustainable Development Goals (SDGs) into industrial operations, particularly within the mining sector, which has a profound impact on social, economic, and environmental dimensions.

<img alt="Harita nickel youth forum 2025" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Harita-Nickel-Youth-Forum-2025.jpg"> 
He introduced the Responsible Mining approach–mining practices that strike a balance between economic productivity, ecosystem protection, and respect for the rights of local communities.

“Doing no harm, doing good, and doing it transparently,” he remarked, underlining that sustainability must begin with a strong understanding of local context and inclusive community engagement in development efforts.

Before the discussion session, participants viewed the documentary Ngomi O Obi (“We Who Live in Obi”), which portrays the daily lives of Obi Island residents who live alongside nickel mining activities. The film offered an authentic perspective on the social and environmental challenges faced by local communities, while also reinforcing the importance of inclusive and sustainable mining practices.

<img alt="17032025 hn youth forum 2025 17" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/17032025_HN_Youth Forum 2025__17.jpg"> 
Harita Nickel’s commitment to environmental responsibility was also reaffirmed by Retno Dewi Handayani, Green Mining Manager, who emphasized that environmental stewardship is a shared responsibility. She encouraged all Harita employees to adopt simple, proactive habits, such as reducing single-use plastics and bringing personal tumblers to work.

“Carrying a tumbler and minimizing single-use plastic are small actions that can grow into collective habits, fostering a stronger environmental culture,” she stated.

<img alt="17032025 hn youth forum 2025 103 11zon" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/17032025_HN_Youth Forum 2025__103_11zon.jpg"> 
The interactive Q&A session added valuable depth to the forum. In addressing a question regarding the practical challenges of implementing SDGs, Dr. Budhi emphasized that the success of sustainability initiatives ultimately depends on collective human awareness.

“No regulation will be effective without the consciousness of the people behind it,” he stated firmly.

This insight marked a fitting conclusion to the Harita Youth Forum, which successfully integrated academic perspectives, community realities, and the collaborative spirit of Harita personnel. As environmental challenges continue to evolve, Harita Nickel reaffirms its commitment to engaging the younger generation in advancing responsible and sustainable mining practices.

Harita Youth Forum 2025: A Collaborative Effort Toward Responsible Mining

In commemoration of World Environment Day (WED) 2025, Harita Nickel once again held its Harita Mengajar (Harita Teaching) program. In this knowledge-sharing initiative, Harita Nickel employees educate students living near the company’s operations. This year’s theme was “Stop Plastic Pollution.” The educational session targeted students from Loji Permai Junior High School and Tunas Muda Senior High School in Kawasi Village, Obi Island, South Halmahera, and took place on Monday, June 16, at the New Kawasi Village Health Sub-Center hall.
Aldico Putra Ganesha, chairperson of this event, explained that the program was specifically designed to instill environmental awareness in the younger generation from an early age. “We believe that significant change can begin with simple actions, like throwing waste in the right place, reducing the use of single-use plastics, and spreading this awareness to family and the wider community,” Aldico stated.<img alt="16062025 hn harita mengajar hlh 39" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/16062025_HN_Harita Mengajar HLH_39.jpg"> 
The first session was led by Lentina Simangunsong from Harita Nickel’s Environment Compliance and Reporting team. She explained the types of plastics, their non-biodegradable nature, and the environmental harm they cause. “Single-use plastics may be convenient, but their ecological footprint can last longer than a human lifetime,” she emphasized.<img alt="16062025 hn harita mengajar hlh 42" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/16062025_HN_Harita Mengajar HLH_42.jpg"> 
The second session was presented by Ricky Danang Pratama, a Conservation Specialist at Harita Nickel, who discussed the impact of waste on biodiversity. Ricky shared real-life examples, ranging from sea turtles entangled in plastic nets to land animals like monkeys injured by human waste. “By understanding real-world cases, we hope students become more aware that small actions can have a significant impact on the environment around them,” Ricky explained.<img alt="16062025 hn harita mengajar hlh 81" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/16062025_HN_Harita Mengajar HLH_81.jpg"> 
The event became even more engaging when students showcased creative products made from waste materials collected in their surroundings. These included pencil holders made from used bottles, piggy banks from cans, tissue boxes, and wall decorations crafted from inorganic waste. The creations not only demonstrated creativity but also served as proof that waste can be repurposed when approached with awareness and care.
Servin Langkodi, Principal of Loji Permai Junior High School, expressed his appreciation during his opening remarks. “From this event, we hope students truly understand that protecting the environment is their responsibility to the Earth and the future. Hopefully, this will be the first step toward making them agents of change in their communities,” he said.
Through the Harita Mengajar program, Harita Nickel emphasizes the importance of providing environmental education to school students. By engaging the younger generation, the company hopes the spirit of environmental stewardship will not end with this event, but will grow into a lasting awareness throughout Kawasi and its surrounding areas.

Harita Nickel Promotes Environmental Awareness Among Kawasi Students on the Dangers of Plastic Waste

As part of its ongoing commitment to corporate social responsibility, Harita Nickel has distributed 255 food relief packages to residents impacted by recent flooding in the villages of Soligi and Wayaloar, located in South Obi District. Each package comprised 5 kilograms of rice, 1 kilogram of sugar, 2 liters of cooking oil, and one box of instant noodles.
Dindin Makinudin, General Manager of Community Affairs at Harita Nickel, stated that the assistance reflects the company’s solidarity with local communities and its responsibility to support those affected by natural disasters in its operational areas.

“This initiative is a manifestation of our concern and responsibility toward residents within our operational vicinity, who have been impacted by flooding due to extreme weather conditions,” he said.
<img alt="Bantuan banjir soligi 2" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Bantuan Banjir Soligi 2.jpg"> 
The Meteorology, Climatology, and Geophysics Agency (BMKG), through the Sultan Baabullah Ternate Class I Meteorological Station, had earlier issued an early warning regarding the potential for extreme weather and flooding in North Maluku from June 9 to 15, 2025.

Dindin expressed hope that the aid would provide meaningful relief to those in need. “While this support may not address all immediate needs, it represents our sincere intent to be present and assist as one extended family during challenging times,” he added.

He also emphasized that Soligi and Wayaloar are key communities within Harita Nickel’s operational perimeter on Obi Island, and that local communities play a vital role in supporting the company’s ongoing activities.

“We aspire for Harita Nickel’s presence to be impactful not only in times of crisis, but also as a long-term partner in fostering resilience and inclusive growth,” he noted.

One of the recipients, Murni La Patilaya, a resident of Soligi, described how the flooding began at approximately 1:00 PM WIT, shortly after Friday prayers, and subsided two hours later. She likened the event to the major flood in 2005, when the river overflowed and nearly entered residents' homes.
<img alt="Bantuan banjir wayaloar ok" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Bantuan Banjir Wayaloar ok.jpg"> 
“I am grateful to Harita Nickel for their concern. Going forward, we hope for improved drainage infrastructure to help mitigate future flooding,” she said.

Echoing this sentiment, Herman, the Village Welfare Officer (Kesra) of Soligi, attributed the flooding to high rainfall and inadequate river flow management. He praised Harita Nickel for its swift and responsive action in addressing the needs of affected residents.

Representing the South Obi Subdistrict government, Jamaludin also extended his appreciation to Harita Nickel. He highlighted the importance of continued collaboration between the company, local government, and the community to ensure sustainable operations and shared benefits.

Harita Nickel Distributes 255 Food Relief Packages to Flood-Affected Communities in Soligi and Wayaloar

Every day, plastic waste from operational activities and employee routines accumulates, posing significant environmental challenges. However, the Laboratory team at PT Megah Surya Pertiwi (MSP), a business unit of Harita Nickel, has innovatively turned this plastic waste into valuable energy through the “From Waste to Energy” project.
The method used is pyrolysis, a thermal decomposition process performed in the absence of oxygen. This process breaks down plastic into oil, gas, and solid residues without burning it. The primary product, a mixed fuel in liquid form, has been successfully used to support various technical operations in the field.

“We aim to address environmental challenges not merely through discussions but through tangible actions,” said Willy Kesuma Dewadi, Head of Technical Support at MSP.

<img alt="Limbah plastik jadi bahan bakar di msp 2" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/news_assets/Limbah-plastik-jadi-bahan-bakar-di-MSP-2.jpg"> 
The project, titled “From Waste to Energy,” follows a structured approach: providing designated plastic bins, sorting the plastic waste, building a pyrolysis machine, and testing the final product. Through this process, the team has successfully converted 1,236 kilograms of plastic waste per year into an alternative, cost-effective, environmentally friendly and sustainable energy source.

Economically, this innovation offers significant advantages. With the machine using only 500 watts of power and electricity costing around IDR 1,699 per kWh, production costs are much lower than the market price of plastic-based fuel, which can reach IDR 7,000 per liter. This results in a potential value gain of around IDR 5,300 per liter.

Charles Hasiholan, Deputy Head of HSE and Security at Harita Nickel, emphasized that this project's benefits extend beyond mere cost efficiency. “This initiative clearly demonstrates the company's commitment to environmental sustainability and circular economy practices,” he said.

<img alt="Inovasi harita nickel ubah plastik jadi bahan bakar alternatif 3" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/news_assets/Inovasi Harita Nickel Ubah Plastik Jadi Bahan Bakar Alternatif-3.jpg"> 
The project was also featured in the Harita Continuous Improvement (HCI) 2024 competition, an annual event encouraging employees to create real innovations in operations, safety, and environmental management. Internal data shows strong implementation results: 100% completion of the initial stages through to production, and 94% success in fuel testing. Field use of the mixed fuel has reached 67% and continues to grow as technical adjustments are made.

“From Waste to Energy is more than just a technical project. It’s a new way of looking at waste, not as a problem, but as an opportunity for the future of alternative energy,” Willy concluded, proudly showing the team’s homemade pyrolysis machine.&nbsp;

Harita Nickel Turns Plastic Waste Into Alternative Energy

Harita Nickel has introduced a sustainable innovation for domestic wastewater treatment by converting used plastic bottles into an efficient biofilter medium. Through a project named Nirwana Brush, the company's Environment & Business Improvement Department has developed an environmentally friendly and cost-effective solution for wastewater treatment plants (IPAL), particularly at the Nirwana employee accommodation facility operated by PT Trimegah Bangun Persada Tbk.
The Nirwana IPAL facility utilizes both aerobic and anaerobic wastewater treatment systems. Both methods rely heavily on biofilter media as a habitat for decomposer microorganisms that play a crucial role in purifying wastewater.

“Usually, we buy biofilter media from suppliers, and it’s quite expensive. Meanwhile, used plastic bottles are available and largely unused,” said M. Saifullah N, a Project Engineer at Harita Nickel.

<img alt="Nirwana brush 2" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Nirwana Brush_2.jpg"> 
In this innovation, used plastic bottles collected from the office surroundings are processed through cleaning, cutting, and structured using iron wire to support microbial growth. Laboratory testing confirmed the system's effectiveness, reducing Total Suspended Solids (TSS) from 49 mg/L down to 3 mg/L&mdash;an efficiency rate of approximately 93.87%.

“With this approach, we’re not only saving costs but also contributing to the reduction of plastic waste, which is notoriously difficult to decompose,” added Ipul, as the Obi-born engineer is known.

“We asked our coworkers to donate used bottles, and many responded positively. It shows that environmental awareness can grow through simple, real actions,” said Dedi Amrin, Manager of Environment & Business Improvement at Harita Nickel.

<img alt="Nirwana brush 1" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Nirwana Brush_1.jpg"> 
With proven results, the project marks a promising first step toward more efficient and environmentally friendly wastewater treatment systems. “Our hope is that this recycling concept can become a new standard for wastewater management across Harita Nickel business units that operate similar treatment systems,” Dedi concluded.

Nirwana Brush: Harita Nickel Turns Plastic Waste into Wastewater Treatment Solution

In the mineral processing industry, waste is often seen as a problem. But through a program called Energizing Granular Activated Carbon (GAC) from Waste to Eco-Efficiency, Harita Nickel has changed that view by turning used activated carbon into an efficient alternative energy source.
GAC plays an important role in the purification process, which is a continuation of the High Pressure Acid Leaching (HPAL) process, a technology used to extract nickel and cobalt from laterite ore. “GAC is made from coconut shells or fibers, which are eventually burned and turned into charcoal,” said Catur Prasetyo, Laboratory Staff at Harita Nickel’s Power Plant.
<img alt="Limbah karbon aktif jadi energi alternatif inovasi keberlanjutan dari harita nickel" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Limbah Karbon Aktif Jadi Energi Alternatif Inovasi Keberlanjutan dari Harita Nickel.jpeg"> 
In this process, GAC helps remove organic compounds and contaminants from the sulfate solution. This improves the quality of the final product and protects the equipment from damage caused by impurities.

Once used, GAC becomes hazardous waste (B3), and Harita Nickel generates more than 1,300 tons of it each year. This challenge soon emerged: in addition to the high costs of handling and transportation, the buildup of this waste also poses risks to the environment and workplace safety.
<img alt="Limbah karbon aktif jadi energi alternatif inovasi keberlanjutan dari harita nickel 3" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Limbah Karbon Aktif Jadi Energi Alternatif Inovasi Keberlanjutan dari Harita Nickel-3.jpeg"> 
“Instead of letting it become waste, we tried to revive this used GAC through controlled combustion, with emissions tested to meet the standards set by the Minister of Environment and Forestry Regulation No. 15 of 2019. The results were remarkable: not only did it produce heat that could be reused, but it also significantly reduced the volume of solid waste,” said Catur.
This project follows strict sustainability standards and was even included in Harita’s internal competition, the Harita Continuous Improvement (HCI) program. “The combustion of used GAC is done in a closed system at the Power Plant. The heat produced is used as an alternative fuel, partially replacing coal consumption,” explained Catur.<img alt="11032025 hn grand final hci 2024 133 1 11zon" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/11032025_HN_Grand Final HCI 2024__133 -1-_11zon.jpg"> 
With this method, carbon emissions can be reduced, energy efficiency improved, and waste disposal costs minimized, bringing added value to mineral processing operations.

“GAC waste has the potential to be used as an alternative fuel because it contains 5,500 calories per gram,” said Adrianus Adityawardana, Superintendent of the Harita Nickel Power Plant.

Adrianus further noted that this innovation has the potential to be replicated across various Harita Nickel operational units. This initiative also strengthens Harita’s leadership in supporting the sustainability mission of Indonesia’s nickel industry, in line with advancing downstreaming through green innovation.

As pressure grows for extractive industries to be more eco-conscious, initiatives like this show real action. It’s not just about new technology, but a new way of thinking and beginning of new opportunities.

Turning Activated Carbon Waste into Energy: Harita Nickel’s Sustainable Innovation

Harita Nickel held the Obi Fishing Tournament 2025 entitled “Let's Keep Our Sea” on Saturday-Sunday, June 14-15, 2025 in the sea of Kawasi Village, Obi Island, South Halmahera, North Maluku. The fishing tournament, which has entered its fourth year, is a routine agenda of Harita Nickel with its operational community to promote the biodiversity of Obi sea waters.
Chairman of the Obi Fishing Tournament 2025 Committee, Ferry Mangindano, said this year's fishing tournament was attended by 135 participants, consisting of 86 local residents and 49 company employees. The fishing area is around Harita Nickel's operations in Kawasi Village, which stretches from the Akelamo River estuary to around the waters of Mala-Mala Island. The total prizes provided were worth Rp 29 million.

As of closing time, 94 kg of fish were caught by the participants. The types of fish varied, ranging from snapper, grouper to tuna.

<img alt="Img 0044.jpeg" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/IMG_0044.jpeg.jpg"> 
"The actual number of catches is greater, due to the fact that only fish weighing more than 3 kg were submitted to the committee. This shows that the fish in the waters around Harita Nickel are still abundant, proof that its sustainability is still maintained," said Ferry.

One of the participants, Max Sikape (50) with his partner Sonny Tamansa (48), came out as the second winner with 12 points. They managed to catch two groupers and one snapper with a total weight of 22 kg around the waters of Mala-Mala, not far from the company's jetty.

"We would have won first place if the barracuda fish of about 20 kg had not escaped. The fish was in our hands, but it came off," he recalled with a laugh. Even so, they were still happy to bring home the Rp6 million cash prize.

Meanwhile, for the most unique catch category, the title was won by Zulfikri Salim, employee of Harita Nickel who managed to catch a tiger shark (Galeocerdo cuvier). However, the shark was immediately released back because of its important role in maintaining the marine ecosystem's health.

<img alt="Obi fishing ikan tangkapan" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Obi Fishing_Ikan Tangkapan.jpeg"> 
Obi Fishing Tournament 2025 was highlighted by Khairun Ternate University academic, Prof. Janib Achmad, S.Pi, M.Sc. The professor of Marine Natural Materials Chemistry said the fishing tournament initiated by Harita Nickel is important to foster ecological awareness among the community. According to him, awareness of fish and water conservation is closely correlated with marine ecological patterns.

"Later, the catches of the participants will confirm that our waters provide fish in diverse numbers and types. Based on that, we can see the size, species, and condition or level of productivity of the existing fishing ground," he explained, during his visit to the fishing tournament.

Director of Health, Safety, and Environment (HSE) Harita Nickel, Tonny Gultom said, the fishing tournament was designed as a means of friendship between the company and the community and at the same time to strengthen awareness of the importance of preserving the sea.

“This year, we feel grateful that this activity is also a platform for cross-party collaboration ranging from internal employees, local communities, village government elements, to all partners who contribute, to jointly protect the sea as a source of life,” said Tonny.

<img alt="Obi fishing peserta" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Obi Fishing_Peserta.jpeg"> 
Tonny emphasized that such activities are in line with the company's commitment to sustainable mining and downstream practices. According to him, marine health is one of the key indicators for the sustainability of the company's operations. To ensure the quality of waters around the company's operations is maintained, it conducts regular monitoring with the support of a competent team and modern equipment.

Obi Fishing Tournament 2025 was closed by cooking fish caught by the participants and then enjoyed together.&nbsp;

"The spirit is collaboration. In the momentum of World Environment Day, we invite the community to jointly protect the environment for future generations," he concluded.

Obi Fishing Tournament 2025: Abundant Fish Catch, Kawasi Sea Waters Still Productive

Working in the mining industry is not easy, especially when it involves environmental responsibility. For Bobby Loys Lengga, Environment Superintendent at PT Halmahera Jaya Feronikel (HJF), it means ensuring every process runs according to regulations, transparently, and accountably.
On a daily basis, Bobby handles often-overlooked matters, ranging from environmental documentation and monitoring water and air quality to waste management, as well as ensuring timely reporting obligations to the government. He is also involved in internal and external audits and oversees the implementation of critical documents, such as the Environmental Impact Assessment (AMDAL), to ensure they are not just kept on paper.

“My job is not only to comply with regulations but also to ensure operations do not neglect social and environmental responsibilities,” said Bobby. He added that protecting the environment is not the task of a single division, but a collaboration involving many parties, from operations to top management.

Bobby began his educational journey in Environmental Engineering at Mulawarman University. His educational background serves as a strong foundation for understanding environmental issues from both technical and policy perspectives.

<img alt="Bobby enviro hjf 2" src="https://apiharitanikel.dipstrategy.co.id/storage/images/old/images/Bobby Enviro HJF 2.jpg" title="Bobby enviro hjf 2">
<figcaption>Bobby Loys Lengga, Environment Superintendent at PT Halmahera Jaya Feronickel, one of Harita Nickel's subsidiaries operating a pyrometallurgical smelter</figcaption>

Before joining PT HJF, Bobby built his career at a coal mining company. That experience in the energy sector strengthened his understanding that each type of mining has unique environmental challenges that need to be managed preventively rather than reactively.

“We work in an industry; there will definitely be impacts. But that doesn’t mean they can’t be controlled,” he said. “The important thing is to know the risks, what the mitigation measures are, and take responsibility if something needs to be fixed.”

According to Bobby, the biggest challenge is not technical. Rather, building environmental awareness among fellow employees is more complicated. He said rules can be made, but if people are indifferent, nothing will work.

“Building a culture is difficult. But little by little it can be done, as long as it is consistent. Education must be ongoing,” he said.

He believes that continuous education and a persuasive approach are key to fostering a sense of ownership toward a sustainable working environment. For Bobby, working on Obi Island is not just about a career, but also about contributing to a region that is an important part of the eastern Indonesian ecosystem.

“We want to show that industry can also be part of the environmental solution, not just a source of problems,” he said.

He hopes that in the future, environmental awareness in the industrial sector will continue to increase. “I am optimistic, especially seeing the enthusiasm of the younger generation who are increasingly concerned about sustainability issues,” he concluded.