. Baltimore and Ohio employees magazine . double track cleaned per daj^ lin. 200 Cubic yards stone cleaned per day 104 1 foreman at $77 per water boy at 15c. per bborers at 15c. per hour. Total cost per day ...$ Total cost per lin. ft. double track Total cost per cu. yd. ballast mine the extent toconserved justifieshave the following: which the materialcleaning ballast we Cu. yd. dirtyballasthandled Percentage oftotal volume Total cost cleaning; Cost per stone .saved Cost per cu. yd. new stone Stone Dirt unloadedon track. 104 lOf) 40 $ 1
. Baltimore and Ohio employees magazine . double track cleaned per daj^ lin. 200 Cubic yards stone cleaned per day 104 1 foreman at $77 per water boy at 15c. per bborers at 15c. per hour. Total cost per day ...$ Total cost per lin. ft. double track Total cost per cu. yd. ballast mine the extent toconserved justifieshave the following: which the materialcleaning ballast we Cu. yd. dirtyballasthandled Percentage oftotal volume Total cost cleaning; Cost per stone .saved Cost per cu. yd. new stone Stone Dirt unloadedon track. 104 lOf) 40 $ 104 • 90 50 104 80 60 104 70 70 104 60 80. 104 50 90 104 40 100 104 30 110 104 104 20 120 When only per cent, of the totalvolume of material handled passes overthe screen and is saved for re-use, thescreening operation becomes as expensiveas the application of new stone. In. ARRANGEMENT OF FORCES WORKING SCREENSTHROUGH CUT, SHOWING THE PRO-CESS OF SACKING DIRT
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbaltimo, bookyear1912
