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years of diamond experience

Our story started in 1978. Over the past 40 years, we’ve developed innovative, proprietary cubic press technology for high-pressure, high-temperature diamond synthesis.

100% of our Products

are highly-engineered and custom-designed

Today, we lead the industry in developing and producing innovative, top-quality PDC inserts, bearings, valves, and mining tools that meet the highest standards–matching the requirements of the most demanding projects.


patents in advanced diamond technology

A dedicated group of experienced scientists, engineers, and technicians drives US Synthetic’s efforts to perfect and enhance our existing diamond solutions.

Advanced technology

US Synthetic Mining is the leader in high-density ceramic roof bolt mining tools-focused on improving the production and safety of today’s underground mining operations. The engineering expertise and unique diamond technology built into every product makes US Synthetic Mining tools the longest lasting and most technically advanced products on the market. US Synthetic Mining offers a proven track record of performance-delivering unmatched durability and toughness from the easiest to the most difficult roof-bolting conditions.

  • Advanced, state-of-the-art research, development, and testing facilities
  • Experienced engineers and scientists with decades of collective experience
  • Continuous field testing to understand and solve the biggest problems field engineers deal with every day
  • ISO 9000 certification
  • Close, personalized relationships with every customer
  • Diamond solutions that are customized and tailored to meet specific drilling requirements
  • Knowledgeable, friendly people who are trained and capable of dealing with any situation

*results vary by location


Today’s mining operations focus on producing the largest amount of tonnage at the lowest possible cost. To meet ever-increasing production demands, mine operators must keep their equipment running with the latest technology. They simply cannot afford to wait on roof-bolting crews using outdated equipment and techniques while continuous miners sit idle. The production challenge for many mine operators can be directly traced to carbide bits, which have been used for decades. These bits easily dull while drilling and need to be replaced frequently-slowing roof bolters and limiting production. This ongoing maintenance problem slows the mining process, decreases production, and creates safety concerns as miners scramble under unsupported areas to change out roof bolting bits so mining operations can continue.


Engineered for the most demanding conditions

As a result of our ongoing research and development efforts, US Synthetic Mining roof-bolt bits are better able to handle the demanding environments they work in. From diamond powder to the finishing phase, every possible aspect of roof-bolt bit development is monitored, measured and improved.

Our roof-bolt bits use custom-made diamond inserts that are designed and tested to meet the specific needs of our customers. At US Synthetic Mining, we are committed to delivering the best parts now and continuing to innovate in the future to ensure success for our customers in their demanding applications.

Why Choose

Diamond as an Engineering Material

Thermal Conductivity

PCD (Diamond) 543W/k•K
Tungsten Carbide 70W/k•K
Silicon Nitride 30 W/k•K
Silicon Carbide 85W/k•K
Copper 388W/k•K
Steel (4140) 43W/k•K


PCD (Diamond) 49.8GPa
Tungsten Carbide 1.8GPa
Silicon Nitride 1.8GPa
Silicon Carbide 2.4GPa
Steel (4140) .2GPa

Fracture Toughness

13 MPa√m ---------- PCD (Diamond) 78MPa√m
11 MPa√m ---------- Tungsten Carbide 66MPa√m
11 MPa√m ---------- PCBN 66MPa√m
9 MPa√m ---------- Silicon Nitride 54MPa√m

Coefficient of Friction

0.01 CoF ---------- PCD (Diamond)
0.2 CoF ---------- Tungsten Carbide
0.42 CoF ---------- Steel (4140)

Top-quality PDC tools

Made for the toughest environments on earth

We lead the industry in the development and production of innovative, top-quality PDC inserts that meet the highest standards and match the requirements of the most demanding engineering projects.

Improving Lives

by giving of our time in the community

We’re working to give back and enhance the lives of people in our neighborhoods and communities, to support the children in our local schools and STEM programs, and to reach out to the less fortunate around the world. We’re lending a helping hand to those that need a little extra help through our volunteer, community-giving, and Engineering Good initiatives. By teaming up with world-class partners and our employees, we’re donating thousands of hours of service yearly and tens of thousands of dollars to local communities and to humanitarian organizations around the world.

The latest

Announcements, events, and news