DCHP-1 Online
bed-rock scraper Placer Mining 
a tool having a blade so set as to facilitate clearing gravel from the bedrock floor.
- 1870 . . . I wish you would bring . . . one small crowbar, a 10-pound sledge[,] three bed-rock scrapers, two shovels. . . .
- 1870 . . . I wish you would bring . . . one small crowbar, a 10-pound sledge[,] three bed-rock scrapers, two shovels. . . .