DOT Diamond Core Drilling, Inc. Services About Us Contact Us Core Drilling From a fraction of an inch up to 80″ in diameter. 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. Applications include communication lines passing through a concrete or brick structure for: WATER SEWER STREAM AIR Request a Quote Contact Us Today! DOT Drilling 780 Sugar Lane Elyria, Ohio 44035 Call Toll Free: 1-800-322-6877 Phone: 440-322-6466 Fax: 440-365-5801 Services All Services Angle Sawing Core Drilling Curb Sawing Hand / Chain Sawing Road Sawing Robotic Demolition Scanning Slab Vermeer Sawing Wall Sawing Wire Sawing Popular Links Home About Us Estimate Services Contact Us Get a Free Estimate! Website by duo.