Top Mining Companies Using Surface Set Core Bits in 2025

Barrick Gold, a name synonymous with gold mining, has long been at the forefront of drilling technology. In 2025, the company's focus on "smart mining" has made surface set core bits a cornerstone of its exploration strategy. With operations spanning North America, Africa, and Australia, Barrick relies on these bits to unlock new gold reserves while maximizing efficiency in existing mines.

Take the Carlin Trend in Nevada, one of the world's richest gold districts. Here, Barrick's teams drill thousands of meters annually, targeting narrow, high-grade gold veins embedded in complex sedimentary rock. Traditional core bits struggled with the region's abrasive shale and limestone, but surface set core bits—equipped with tungsten carbide tips—have changed the game. "We used to ｒｅｐｌａｃｅ bits every 50 meters; now we're hitting 150 meters or more," says Maria Gonzalez, Barrick's Senior Exploration Geologist. "The surface set diamonds hold up against the rock's grit, and the carbide tips add an extra layer of toughness. It's cut our drilling costs by 22% in Carlin alone."

But Barrick's innovation doesn't stop at durability. In the Kibali Gold Mine, Democratic Republic of Congo (DRC), the company has paired surface set core bits with AI-driven core sampling rigs. These rigs use real-time data to adjust drilling speed and pressure, ensuring the bit maintains optimal contact with the rock. "In remote areas like Kibali, downtime is expensive," explains John Mbeki, Kibali's Operations Director. "By combining surface set bits with smart rigs, we've reduced unplanned stops by 35%. The bits send data on temperature and vibration, so we know exactly when to service them—no more guessing."

Sustainability is another key driver. Barrick has partnered with tool manufacturers to develop recycled tungsten carbide tips for its surface set bits, cutting reliance on virgin materials. "Mining's future is circular," Gonzalez adds. "We're not just extracting gold—we're reusing resources at every step, and our core bits are a big part of that."

Rio Tinto, a global leader in iron ore, copper, and aluminum, has shifted gears in 2025 to prioritize critical minerals for the green energy transition—think lithium for batteries and copper for electric grids. To find these elusive resources, the company has turned to surface set core bits, particularly in deep, complex geological formations.

At the Oyu Tolgoi copper-gold mine in Mongolia, one of the world's largest undeveloped copper deposits, Rio Tinto is drilling up to 3 kilometers underground. The ore here is locked in hard, metamorphosed rock, making traditional bits ineffective. "We needed something that could handle extreme pressure and abrasion," says Dr. Elena Petrov, Rio Tinto's Chief Geologist for Copper. "Surface set core bits were the answer. Their exposed diamonds grind through the rock like a laser, giving us intact cores that reveal the copper's exact distribution. This precision has helped us map the ore body 40% more accurately than with older bits."

Lithium exploration in Western Australia's Pilbara region tells a similar story. Here, Rio Tinto is targeting lithium-rich pegmatites, which are notoriously hard and brittle. Surface set core bits, paired with specialized mining cutting tools, have enabled the company to extract samples with minimal fracturing. "Lithium deposits are often small and scattered," Petrov notes. "If the core breaks, we lose critical data. Surface set bits give us clean, continuous samples—even in the trickiest pegmatites. It's like doing surgery on the Earth."

Rio Tinto is also investing in eco-friendly drilling practices. In 2025, the company launched a pilot program using water-based lubricants with its surface set core bits, reducing the use of petroleum-based fluids by 70% in its Australian operations. "Sustainability isn't optional anymore," says James Wilson, Rio Tinto's Head of Innovation. "Our surface set bits are designed to work with these greener fluids without sacrificing performance. It's a win-win for the planet and our bottom line."

Newmont, the world's largest gold miner by production, is embracing the "Internet of Drills" in 2025—and surface set core bits are the network's critical nodes. With mines in Peru, Ghana, and the United States, the company is using IoT-enabled core bits to transform how it explores and extracts resources.

The Tanami Gold Mine in Australia's remote Northern Territory is a case in point. Here, Newmont operates in a harsh desert environment where temperatures soar above 40°C, and logistics are challenging. "We can't afford to wait for a bit to fail—parts take days to ship in," says David Chen, Newmont's Digital Mining Lead. So the company embedded tiny sensors into its surface set core bits to monitor temperature, vibration, and wear in real time. "The data streams to our cloud platform, where AI predicts when a bit will need replacement. We've cut unplanned downtime by 40% at Tanami, and the bits themselves last 30% longer because we're servicing them proactively."

In Peru's Yanacocha Mine, Newmont is using surface set core bits to explore for copper-gold deposits beneath existing operations. The mine's high-altitude (3,500–4,100 meters) and variable rock types—from soft clay to hard andesite—demand a versatile bit. "Surface set bits adapt beautifully," says Ana Ruiz, Yanacocha's Exploration Manager. "We can switch between rock types without changing bits, which saves hours per shift. And because the diamonds are on the surface, we get sharper, more detailed cores—key for identifying copper-rich zones that might have been missed with older tools."

Newmont is also leading the charge in circular economy practices. In 2025, it launched a program to (recycle) used surface set core bits, extracting and reusing their tungsten carbide tips and diamonds. "A single bit contains hundreds of dollars' worth of materials," Chen explains. "By recycling, we're not just reducing waste—we're creating a closed-loop system that lowers our reliance on mining raw materials for tool production. It's mining for mining, in a way."

Anglo American, a diversified giant with interests in platinum, diamonds, copper, and iron ore, is no stranger to tough drilling conditions. In 2025, the company is leaning into surface set core bits to tackle some of the world's hardest rock formations, from South Africa's Bushveld Complex (platinum) to Brazil's Carajás Iron Ore Mine.

At Kumba Iron Ore's Sishen Mine in South Africa, Anglo American faces a unique challenge: banded iron formation (BIF), a rock so hard it's been called "nature's armor." Traditional core bits would dull within hours, but surface set core bits—with their exposed diamonds—are thriving. "BIF is 7–8 on the Mohs scale, almost as hard as granite," says Thabo Nkosi, Anglo American's Drilling Technology Specialist. "Surface set bits grind through it like a hot knife through butter. We're getting cores with 98% recovery rates, which is unheard of in BIF. It's helping us map ore bodies more accurately, so we can mine with less waste."

Anglo American is also pushing the boundaries of bit design. In 2025, it unveiled a prototype surface set core bit with a "segmented crown"—a design that allows the bit to flex slightly, reducing stress in fractured rock. "In the copper mines of Chile, the rock is full of faults and cracks," Nkosi explains. "Rigid bits would get stuck or break, but the segmented crown absorbs the shock. We tested it in Los Bronces Mine and saw a 50% ｄｒｏｐ in bit failures."

Beyond performance, Anglo American is focused on reducing drilling's carbon footprint. The company's surface set core bits are now compatible with its "green rigs"—electric and hybrid core sampling rigs that cut emissions by 60%. "We're not just drilling for minerals; we're drilling for a low-carbon future," Nkosi adds. "Surface set bits are efficient, durable, and now, they're part of our net-zero journey."