PtmiKGTON.] 
DREDGING. 
171 
The figures for the several items of expense in the following tables varied from 
month to month throughout the year, and the averages for the entire year only are 
given: 
Operating and all other costs. 
Operating expense Biggs No. 1 and superintendence 
General expense, Oroville and San Francisco 
General plant 
Bullion expense _ 
Taxes 
Warehouse 
Insurance 
Legal 
Total 
Total for year. 
Total ex- 
pense per 
cubic yard. 
Cents. 
$27, 832. 53 
5.62 
1, 788. 62 
.36 
1, 262. 78 
.26 
251.34 
.05 
1,942.66 
.39 
401.18 
.08 
450. 00 
.09 
1, 070. 50 
.21 
34, 999. 41 
'.06 
Details of operating costs. 
Labor: 
Operative 
Repair 
Superintendence 
Power: 
Dredge 
Pumps 
Hardware: 
Supplies, tools, oils, etc 
-.Repair parts, etc 
Freight, express, and hauling 
Steel cables 
Lumber 
Electric supplies and work... 
Clearing ground 
Sundry expenses 
Total 
Total for year. 
$6, 435. 20 
4, 690. 41 
1 , 875. 00 
4, 902. 81 
68.20 
1,109.77 
6, 768. 23 
504. 69 
336. 03 
28. 06 
285. 67 
794. 40 
34.06 
27, 832. 53 
Per cent of 
total. 
Per cent. 
22.9 
16.8 
6.8 
17.7 
4.0 
24.4 
1.8 
1.2 
. 1 
1.0 
2.9 
.1 
100. 
Cost per 
cubic yard. 
Cents. 
1.290 
.943 
.380 
1.000 
.014 
.220 
1 . 370 
.100 
.070 
.006 
.060 
. 160 
.007 
5. 620 
