Dredging means having means for excluding oversized slender obje

Dredging module for use with conventional back hoe apparatus

Dredging or excavating machine for marshes or canals

Dredging suction-jet head

Dredging system and apparatus

Dredging system and methods of dredging

Dredging vessel

Drive arrangement for snowblower

Drive for elevating mechanism

Drive means for an elevating scraper elevator

Drive mechanism for sand, etc., dredging apparatus

Ejection tube assembly for a snowblower

Electronic control system for pneumatic-hydraulic pump dredge

Elevating earth scraper

Elevating scraper up-stop mechanism

Elevating scraper up-stop mechanism

Elevating scraper with perforate separator

Elevating-type scraper having forwardly sliding floor and full-w

Elevating-type scraper having forwardly swingable apron and full

Elevating-type scraper having forwardly swingable floor section