Two varieties of sand from an oil drilling ?
Two varieties of sand from an oil drilling district. The hand on the left holds dry, oil-less sand, while the other holds sand rich and dark with oil. Finding oil-soaked sand in a test-boring indicates that the chances of striking oil are good. Ca. 1944
Picture No
10665600
Media ID
45211334
Size
3000px x 2007px
(962KB)
Credit
Mary Evans / Everett Collection
Usage Restrictions
Strictly editorial use only. Please contact Mary Evans if any other use required
