If you have a core drilling job that needs done, DOT Diamond Core Drilling has the equipment needed to get the job done. Holes can be drilled underwater, vertical, horizontal, angled, compound angle and even upside down. Our equipment can be powered by electric, hydraulic, pneumatic and high cycle motors. We have the capacity to drill holes ranging in diameter from fractions of an inch up to 80” inches in diameter. And due to the development of continuous tubing core bits’ holes can be drilled up to depths of 60’ feet or longer.