Vertical closed loop system - Articles

Gold Mining

Drilling Know-How and Geophysics are Guiding Kenorland's 16,000-Foot Plus Exploration Program

A vast corridor has exposed itself as rich in gold ore. The challenge? Determining the site’s geometry and whether even more exploratory drilling needs to happen.

The Driller Staff

October 16, 2026

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A vast corridor has exposed itself as rich in gold ore, The challenge? Determining the site’s geometry and whether even more exploratory drilling needs to happen.

You Know the Drill: Drilling Goes Geothermal

Alexis Brumm

March 18, 2019

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Dan Rau, PE, has been involved in the geothermal industry since late 1999, when he first began his adventure into the field.

Geothermal Jobs Have a Lot of Upside

David King

March 7, 2019

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Geothermal helps all of us in this industry. Even if you do not get involved in geothermal work, you might get water jobs because your competition is tied up on a geothermal project.

You Know the Drill: 'Don't Just Fix the Problem'

Valerie King

October 1, 2015

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If anyone gets around, it’s Gary Sprowls, MGWC, a drilling supervisor at Jackson Geothermal, based in Mansfield, Ohio. Sprowls oversees commercial geothermal closed loop jobs in states including, but not limited to Ohio, Missouri, Alabama, Virginia, West Virginia, Pennsylvania, New York and Kentucky.

You Can't Do Geothermal Here, Said No Driller Ever

Jay Egg

January 20, 2015

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“You Can’t Do Geothermal Here,” said no driller ever …

Modular Geothermal System Pays Off for Ditch Witch Manufacturer

Modular Chiller System Uses Geothermal to Fight Energy Costs

Judy Linder

February 1, 2014

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In the late 1940s, 28- year-old Ed Malzahn applied a combination of knowledge from his father’s blacksmith business and his degree in mechanical engineering to produce a machine that would revolutionize the underground construction industry as we know it today.

New Drilling Product Makes Geothermal Drilling Easier

Robert J. Sincovich

January 1, 2014

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A leading and long-established well drilling firm in northern New Jersey found that working with a completely new ground loop heat exchanger called “Twister,” an innovative option for use in heat pump systems, required significantly less time and effort to get the job done and resulted in savings of up to about 25 percent in cost.