Evening Republican, Volume 21, Number 149, Rensselaer, Jasper County, 3 July 1918 — Enormous Sand Digger. [ARTICLE]

Enormous Sand Digger.

A large ladder dredge has recently been constructed for use at Neville island, Pittsburgh, for dredging sand and gravel. This dredge has a ladder that will reach 50 feet below the surface of the water. It brings up sand and gravel and' delivers it into a revolving screen on the' main deck. By means of secondary ladders the screened material is raised from tanks in the hull of the dredge to chutes that lead into barges alongside.—Scientific American. ,