About

TEAM TEI Rock Drills President Sue Patterson/Frank & founder Bill Patterson

TEI President Sue Patterson/Frank
& founder Bill Patterson

TEI Rock Drills Inc. manufactures drilling attachments, limited access drills, and drill rig components in Montrose, Colorado USA. Founded in 1980 by Bill Patterson, Tech Enterprises Inc., as it was known then, began the long journey to where TEI now stands as the world’s leading manufacturer of drilling attachments and limited access drills.

TEI prides itself on providing both value and service not seen in most industries. We believe in supplying good jobs to our employees, giving the best value to our customers and working closely with our vendors in order to bring together what has become known as TEAM TEI. All of these people working together combine to make a great working environment that produces superior drilling equipment made in the USA.

We invite you to personally meet TEAM TEI and attend our Hollow Bar Installation School, the TEI Open House, or join us at an upcoming trade show or seminar. Check our Events page for details. We look forward to seeing you at an event or at our factory in beautiful Western Colorado.