Sand and gravel excavation: Part 3: hydraulic dredge, clamshell dredge, ladder dredge, and dipper dredge

Thoenen, J.R. | Engineering Index Backfile | 1935

Dredge "Cleveland". World's first convertible clamshell-dipper

Wedertz, R.L. | Engineering Index Backfile | 1969

Rohr Clamshell Dredge Extends Spokane Sand & Gravel Operation

Online Contents | 1995

FEATURES - New Clamshell Dredge for Sand & Gravel Mining

Online Contents | 2000

Development and Simulation of a Flywheel-Based Energy Storage System on a Clamshell Dredge

de Jong, H.J. / Williams, K.R. | British Library Conference Proceedings | 2007