350 University Geological Survey of Kansas. 
for driving the same is furnished by the boilers of the plant ; 
so no definite information could be obtained as to the actual 
cost of running the pumps. 
Cost of Extraction of Ore. ; 
The cost of drifting and stoping have already been consid- 
ered, but the total cost of the operations, especially loosening 
and extracting ore, is given as-obtained from a number of 
large mines, and represents a fair average. 
Powder, fuse, caps, and primers (per day)............. $6 00 
Lighting oil (40 cents per shift, two shifts)............. 80 
Sharpening drills (20 to 40 per day), at 5 cents......... 2 00 
Sharpening picks (15 to 20 per day), at 24 cents........ 50 
Ground ‘foreman, 3). oRG aca ra ta oe eee 2 50 
Minersi(sixteen ati $2))h. ss, ce ee ae 32 00 
Total per days exten. 6 Bea ae ee $43 80 
The cost per week would be, with this force, $306.60. 
Cost of Hoisting. 
The cost of hoisting is one of the least expensive opera- 
tions in connection with extraction and concentration of ore 
in this district. This is due to the fact that the ore must be 
elevated but a comparatively short distance. The hoisting 
apparatus is simple, and therefore easily operated and re- 
paired. In the smaller plants, and especially in the pros- 
pecting shafts, hoisting is often done by hired or rented 
outfits. This is, however, never done in the larger plants. 
When the hoisting machinery is rented, the cost is as follows: 
Labor; onewman,atis2in. cen cee eee $14 00 
Rention machines periweelk@rrrnereene arene 5 00 
Gost ‘of ropes sper weeleg ns errr one en ate trae eats erated 2 25 
Cost: of water, persweekeatseceect sae ee eee ee 50 
Oiland: TEPalese ANA U ean ae OG sie Sparen arin cee 5 00 
Costior coaletwOntons a tebZeeenic ener ei ree 4 00 
da) rh re a AR ach at ar MMMM Miia an be sre Un OR cin $30 75 
To hire a man with hoisting apparatus, instead of renting. 
or buying, the cost would be about as follows: 
Wacesiofsmantandymachinesaa rer aero cee eeenee $19 00 
Coallstwo tons ati $22 saree ee snl a sears eee peta: cee ree 4 00 
ROpe cies Se Pe ae ir ee Ne Re Se ean ste it. tey aaa) lar pes 2 25 
Water 0 eA eae ar A Oe EU Aa oe oe ee a 50 
Oilvand repairs scsi Reece re ctenere nice Moree oie cea 5 00 
(Molec) IRR Pepe, ARICA CA aM NaT hing Ghd AiGacdo ou oa 6.0 $30 75 
The cost is the same, as is seen from the above figures ; the 
latter case being preferable, however, as the owner of the 
