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Handwritten annotation on recto of photograph: "POURING FOOTING RETAINING WALL JULY 4/64." Photograph depicts construction workers manually pouring cement into forms laid against mountain wall on high elevation of construction site. Cement is being transported by wheelbarrow. A retaining structure made with wood planks and rebar separates mountainside dirt from cement forms. A bulldozer can be seen in background, as well as a front end loader and back hoe tractor. Building at crusher site also in background.

Handwritten annotation on recto of photograph: "RETAINING RIBS JUNE 29/64". Photograph depicts construction workers on and near wooden framework structure extending from base of crusher building. Crane in background against mountainside. Miscellaneous construction equipment and materials throughout.