CRAIG — The Cooper family knows how to work heavy machinery. The kids could run a hay baler by their early teens, and two of the three ran monster-sized drills at the coal mines along with their dad.

But learning to maneuver the shiny red drill they use to tap into underground heat feels different. It’s a critical part of the Colorado family’s new business, High Altitude Geothermal, which installs geothermal heat pumps that use the Earth’s constant temperature to heat and cool buildings. At stake is not just their livelihood but a century-long family legacy of producing energy in Moffat County.

Like many families in Craig, the Coopers have worked in coal for generations — and in oil before that. That’s ending for Matt Cooper and his son Matthew as one of three coal mines in the area clos

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