Henry Beecher Dierdorff (b. 1851 – d.1935) was an American inventor in the field of mining.

Henry Beecher Dierdorff was an inventor of mining equipment , most notable for the first successful application of electricity to power mining equipment under the surface of earth.

While an engineering employee of the Jeffery Mining and Manufacturing Company of Columbus, Ohio, Dierdorff developed insulation that could be packed around electric motor housings to supress sparking found on early electrical motors. This technology allowed the first safe electric seam cutting tool in underground mining. Dierdorff also worked on developing reliable electrical power systems to deliver electricity to miners underground.

Dierdorff was born near Seville in Medina County, Ohio in 1851. He died in Columbus, Ohio in 1935 and is buried in Greenlawn Cemetery , Columbus, Ohio.

Resources

• The Ohio State Journal, "DEATH CLAIMS H. BEECHER DIERDORFF" January 26, 1935.

• "Jeffery Service" Magazine, March 1935.