316 University Geological Survey of Kansas. 
which, at 5 cents a foot, makes $2 per set, or 50 cents per 
foot of timber in drift. If the spiles are placed 6 inches 
apart, there are (considering the sides and top covered ) for 
the 4 feet about 100 feet, which, at 5 cents per 10-foot length, 
makes 50 cents. There would probably be 150 feet of lagging, 
which being made up of odds and ends is much cheaper— say, 
about 3 cents per 10-foot length, which makes 45 cents. 
Two men are employed, and are able to place 3 sets with 
spiles and lagging per day, which make 12 feet advance. 
Their wages are $2 apiece, or $4 per day for the two, which 
gives $1.33 per 4 feet (one set) of timbering, or 33 cents per 
foot advance. 
Summary of cost for timbering a drift of 4 feet advance: 
THAD OR ccs s Re ee ol EE ee ee SSL S335 
Timber: (Sets) sores kos cs OA ee ee ey eee ea ne, a 2 00 
Timbers(sptles) ena os cic cree ee cau One Ure 50 
Timber: (agen oie tac seyret a eee Eee Ad 
od LO 1 CE Pilar, MW RC ER le Yiernty Mab won ain Reach Mas AT $4 28 
The cost of timbering 4 feet is $4.28, or $1.07 per foot. 
Total cost of excavating and timbering: 
Costiof timberineaaperstootenee te Cen eeeeeraee $1 07 
(COME CLE GDLCAVENTINE, JOSIP WOOD caoocasoccoccv00000000000006 8 00 
Total teapot ee ee $9 07 
Cogs or pens cost, per single cog (8x8x 10), at 5 cents a foot, 
about 64.cents per foot, or $6.40 per cog. When the timber 
is cut from the company’s land, the cost of cutting and haul- 
ing amounts to about 3 cents per linear foot. The above fig- 
ures would then be reduced to $4.44 per cog. The various 
systems of timbering modify these figures quite a little, but 
it is believed that they are a fair estimate. 
Cost of Pumping. 
The cost of pumping depends on the kind of pump em- 
ployed. With the shallow mining of the present, both the 
first cost and running expenses of the Cornish form of pump 
are less than with the steam pump; yet the advantages of the 
steam pumps are so decided that they are being introduced 
into the deeper mines. The cost is therefore divided into two 
parts, namely, Cornish pump work, which is by far the larger 
part, and steam pump work. 
