bug dust

bug dust

[′bəg ‚dəst]
(mining engineering)
The fine coal or other material resulting from a boring or cutting of a drill, a mining machine, or even a pick.
References in periodicals archive ?
Tenders are invited for 4000 gallons MC 3000 200 tons, hot & cold mix asphalt more or less The following: Limestone: Gravel: Slag: #4 #4 #1 & 2 #6 #8 #4 #8 #6 or #57 #6 #9 #9 or Grit Bug Dust #304 Crusher Run Approximately 3.