Caterpillar D8 diesel tractor with LeTourneau angledozer in quarry, Mariana Islands

View of worker driving Caterpillar D8 diesel tractor with LeTourneau bulldozer pushing coral rock in a quarry on the Mariana Islands during World War II. Label on back: "Caterpillar Tractor Co., Peoria, Il. Rec'd from Washington, D.C. Office. W.B.T.'s. Their letter, 2-10-45. Model, D8. Description of work, Mariana Islands. 'Caterpillar' diesel D8 tractor with LeTourneau angledozer operated by a member of a Seabee battalion, pushing coral rock and gravel over ledges of a quarry where the material is loaded by shovels into trucks. The coral rock is used for road and airstrip surfacing, foundation fills for buildings, etc." Handwritten on back: "Bulldozers."