Gillette in Campbell County, Wyoming — The American West (Mountains)

Caterpillar

— Energy Equipment Exhibit —

Photographed by Cosmos Mariner, July 29, 2022

1. Caterpillar Marker

Inscription.
Model Twenty-two
Horsepower 26
Year built 1937
Weight 6210

This caterpillar track-type tractor was equipped with a small blade and used extensively in the oilfields surrounding Gillette, WY. It was used for light construction, road building, and road maintenance.

Donated by Buck Ruff
Supported by Hettinger Welding, Gane Production

Erected by Energy Equipment Exhibit of the High Plains Technology Center at Cam-Plex.

Topics. This historical marker is listed in these topic lists: Industry & Commerce • Roads & Vehicles. A significant historical year for this entry is 1937.

Location. 44° 17.091′ N, 105° 26.91′ W. Marker is in Gillette, Wyoming, in Campbell County. It can be reached from the intersection of South Garner Lake Road and Martingale Drive, on the left when traveling south. The marker and caterpillar are in the Cam-Plex Energy Equipment Exhibit at Gillette Energy Park. Touch for map. Marker is at or near this postal address: 891 South Garner Lake Road, Gillette WY 82718, United States of America. Touch for directions.

Regionally, this marker is in Wyoming’s Powder River Basin.

It is also in the American

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Mountain West,

on the Great Plains,

on the Northern Plains,

and specifically on the High Plains.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once the Louisiana Purchase.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Worthington Generator Units (a few steps from this marker); Engine 5802 (within shouting distance of this marker); Coal Shovel Bucket (within shouting distance of this marker); Rotary Drill (about 300 feet away, measured in a direct line); Sundial and Time Capsule (about 300 feet away); Industrial Tires (about 400 feet away); Pulling Unit (about 400 feet away); Unit Rig Truck (about 600 feet away). Touch for a list and map of all markers in Gillette.

Also see . . .
1. Caterpillar Model Twenty-Two, 1934-1939 (Explore North).

Excerpt: The Caterpillar Model Twenty-Two track-type tractor was manufactured at the East Peoria plant from 1934 through 1939. The first spec sheet from 1934 indicated that the tractor had a 4-cylinder, 4x5-inch bore and stroke engine
Photographed by Cosmos Mariner, July 29, 2022

2. Caterpillar & Marker
rated at 23.69 drawbar horsepower and 29.39 belt horsepower. It weighed in at 6,150 pounds. More than 15,000 of these tractors were built and came in both a standard 40-inch gauge and a wide 50-inch gauge. In 1934, the standard 40-inch gauge retailed for $1,450 and the wide 50-inch gauge for $1,500. The Twenty-Two was a versatile machine, as it was paired with a wide variety of other equipment depending on the job at hand.

(Submitted on July 26, 2026, by Cosmos Mariner of Cape Canaveral, Florida.)

2. 1937 Caterpillar Twenty Two walk around (Youtube). (Submitted on July 26, 2026, by Cosmos Mariner of Cape Canaveral, Florida.)

Caterpillar Tractor image. Click for full size.

Photographed by Cosmos Mariner, July 29, 2022

3. Caterpillar Tractor

Credits. This page was last revised on July 26, 2026. It was originally submitted on July 25, 2026, by Cosmos Mariner of Cape Canaveral, Florida. This page has been viewed 6 times since then. Photos: 1, 2, 3. submitted on July 26, 2026, by Cosmos Mariner of Cape Canaveral, Florida.