Page:The New International Encyclopædia 1st ed. v. 06.djvu/521

 1. OSGOOD CLAM SHELL DREDGE. This dredge has a bucket of ten cubic yards capacity, and digs to a depth of 80 feet. 2. OSGOOD DIPPER DREDGE. The dipper carries 1S cubic yards of material, and works in depths up to 50 feet.