DRAINAGE METHODS FOR COUNTY ROADS. 61 
with 40 per cent dynamite, fired by means of batteries, and the 
rock was hauled to the charging platform in dump carts. A 25- 
horsepower engine and a No. 4J crusher were used. The record out- 
put was 183} cubic yards in one day of 14 hours. The bins were of 
70 cubic yards capacity with three subdivisions. The scale of wages 
was : 
Superintendent per day__ $4. 50 
Timekeeper do 2. 00 
Quarry foreman per hour . 20 
Drill runners . do J ' 2 
Crusher feeders do . 171 
Crusher engineman doi . 25 
Powder man do .16 
Unskilled labor do . 15 
Water boy . ; do J 
Cart and driver do . 25 
The items of cost were : 
Labor : 
Superintendence $128. 10 
Stripping 219. 03 
Drilling and blasting_ 412. 57 
Sledging 798. 31 
Hauling to and charging crusher 1. 306. 38 
Crushing and screening 326. 74 
Repairs to crusher 42. 80 
Sharpening steel and small tools 214. 03 
Materials : 
Coal 89. 45 
Oil 11. 20 
Dynamite, caps, and fuse 261. 10 
Repairs to crusher 48. 70 
Small tools 64. 70 
Finance : 
Interest on investment, depreciation, etc 475. 85 
Total - 4, 398. 46 
Total stone quarried and crushed cubic yards__ 4. 932. 3 
Cost per cubic yard for quarrying and crushing $0. 80 
The cost of quarrying and crushing will average at least 25 per cent 
higher for trap or granite than for limestone where the quarry con- 
ditions are similar. 
The largest producers of crushed trap seldom can afford to sell 
their product at less than about 65 cents per ton or 85 cents per cubic 
yard, f. o. b. plant, and where the stone is quarried in small quanti- 
ties the actual cost may greatly exceed those figures. For example, 
nine small trap and granite quarries in the State of Maine, operated 
