Gill Rock Drill Co.
Manufacturer, distributor and service provider of drill rigs, rotary drill pipes, adaptors and stabilizers used in the drilling industry.
http://www.gillrockdrill.com/

Burrell Implement Company
Burrell Implement Co. - Implement dealer specializing in used and rebuilt John Deere parts and equipment as well as other items such as salvage cars. Call (580)227-4494.
http://www.burrells.net/

Christensen Products
Supplies products for mineral exploration, environmental, geo-technical, civil engineering, and underground drilling industries. Diamond drill bits, core barrels, drill rod, casings, augers, and drill rigs.
http://www.christensenproducts.com

HollyPipe
FW 8 DW 8 HTML
http://www.hollypipe.com/

Drill String Services, Inc.
Specializes in drill pipe inspection and CNC lathe machining services, drill pipe and drilling components. Facilities in both Louisiana and Texas serving the Gulf Coast. Includes a detailed list of services.
http://www.drillstringservices.com/

Rotating Objects
Developer of magnetic field sensing technology used to control light sources on a rotating object.
http://www.rotatingobjects.com/

Scott Rotary Seals
Manufacturer Of Rotary Timing Valves and Rotary Unions for most Industrial Applications. Scott Rotary Seals (SRS) Rotating Unions, Single and Multi-Ported For Transfer Of Liquids; Gases; Complete Fluid Isolation Capabilities. SRS Rotary Timing Valves, Automatic Or External Flow Control In Rotary Applications: Control System Simplification, Elimination Of System Interlocks. Pre-Engineered; Pre-Designed Products Available. Remanufacturing/Rebuild, Spare Parts Service; Design Engineering; Technical Assistance For Most Seal Applications; R&D Capabilities For Special Customer Applications; Computer Controlled Testing
http://www.scottrotaryseals.com/

Omsco
A global provider of drill pipe and drill string components. Includes a catalog of products.
http://www.omscoind.com/

Rockmore International
Rockmore International manufactures drill bits, drill rods, drill accessories and other hard rock drilling tools used in mining and construction.
http://www.rockmore-intl.com/

Haedong Special Machinery Co., Ltd.
Manufactures special cutting tools, gun reamer, burnishing drill and burnishing reamer, twist step drill, 3S drill, form tools.
http://www.hamcotool.com