Caterpillar tractor with sheep's foot tamper used in compacting material cofferdam fills - NARA - 293809.jpg
en
Caterpillar tractor with sheep's foot tamper used in compacting material cofferdam fills NARA 293809, Hoover Dam construction equipment, Cofferdams, Tracked tractors, Roller compactors, Caterpillar Seventy Five, Digital Public Library of America files, US National Archives series: Photograph albums, compiled 1903 - 1972, Images from the National Archives and Records Administration, US National Archives location: other, "Caterpillar tractor with sheep's foot tamper used in compacting material cofferdam fills."
commons
ja
羊足のタンパーを備えたキャタピラートラクター 羊足のタンパー 羊足のタンパー 荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役用荷役
commons_translated
caterpillar-tracked seventy-five tamper seventy-two mountain sheep