Skip to main content

Work on south branch of Gray Ridge Road leading into Water Canyon. The method of work consists in drilling deep holes along the upper side of the road, springing these holed with dynamite, then loading the cavities with black powder which breaks and throws the rock from its original position as shown in view. (J.B.L.)

 Digital Record
Identifier: https://calisphere.org/item/ark:/13030/hb6m3nb3tf