Founded in 1981, Pacific Boring, Inc. (Pacific Boring) has built a remarkable legacy in trenchless construction, but its story begins with three Central Valley men who turned a shared vision into one of the nation’s most respected tunneling contractors. David Cline, James Gardner, and Calistro “Cal” Terrasas combined grit, ingenuity, and determination to create a
company that thrives on overcoming challenges and delivering innovative solutions.
FOUNDING ROOTS IN THE CENTRAL VALLEY
David Cline was born in Selma, California, and attended Washington Union High School in Easton, where he met James Gardner, his future business partner. James, raised in Easton,
also attended Washington Union High School, graduating with Gardner in 1962. In 1978, their paths crossed again when they began working together at a horizontal drilling company.
During this time, they met Calistro Terrasas, a U.S. Army veteran and Clovis native who had recently joined the company after returning home from his service. The three men quickly became a formidable team, united by their shared work….
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