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Abandoned Treasure: McCormick-Deering TracTracTor

Rare McCormick-Deering Model 10-20 TracTracTor discovered in Mojave Desert

| September 2012

  • McCormick-Deering TracTracTor
    View of the McCormick-Deering's left side. Trees in this area were burned in a 2005 wildfire, but the crawler was unaffected. 
  • TracTracTor
    Close view of the crawler and dozer controls. Some still move; others don't. 
  • McCormick-Deering
    Right side view of what appears to be a McCormick-Deering 10-20 TracTracTor. The track on one side is missing: the hood is partially visible at bottom right. The two "camel hump" steering clutch housings are clearly visible against the engine's fire wall. 
  • Front View of McCormick-Deering Model 10-20
    Front view of the crawler's bulldozer attachment. Note the water pipe along the left side. 

  • McCormick-Deering TracTracTor
  • TracTracTor
  • McCormick-Deering
  • Front View of McCormick-Deering Model 10-20

High in the Providence Mountains of southeastern California’s Mojave Desert, near an abandoned gold and silver mine, rests a derelict McCormick-Deering crawler tractor. Tucked into a small side canyon and mostly hidden by trees and bushes, this early crawler was found late last year by inquisitive hikers.

Physical evidence surrounding the crawler indicates the piece was abandoned decades ago, but being in a relatively dry desert climate, it has survived remarkably well. Hiker friends of mine reported their find to me some time later, as I did not accompany them on the initial outing.

The crawler appeared to be a Model 10-20 TracTracTor. In early March 2012, I plodded up the old mine road to see it myself. My route took me past mine ruins and down into the next canyon. This would normally be a scenic forest area, but an unchecked wildfire in 2005 destroyed most of the pinyon and juniper trees on 71,000 acres. Up a side canyon I saw a bit of yellow metal, and there was the crawler. No road or trail leads to it, but the hiking is not difficult.

No serious rust was seen anywhere on the crawler. The right track and some critical engine parts are missing and were not seen nearby. Very likely the crawler had not been operated for many years. Without spark plugs to keep out the occasional rain and snow, the engine is probably rusted stuck. I tried the foot pedals and hand controls: some moved, some did not.

The 10-20’s 284-cubic inch, 27 hp engine ran on either gasoline or kerosene. Unusual hand controls may have been designed for a standing operator. Unique to this crawler is the hydraulic bulldozer attachment. It appears to have been an after-market kit; the manufacturer is unknown. Ordinary water pipe was used in the crawler’s hydraulic system.

Found in a mountainous mining region, the crawler was presumably used for road construction and site clearing. Or it may have been used as a farm tractor; surrounding valleys contained many farms before the drought of the 1930s. A farmer giving up on his dried-out cropland could have sold the crawler to miners who then installed the dozer blade.


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