MINEBK00861

• County: Boulder
• Volume: 9
• Document: Inspectr
• Suffix: A

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DEVELOPMENT.
:' Richmond Shaft No. 1,
300 ft. deep.
;Drift at 60 ft. level, N.225 ft.
• " " 110 " " " 110 " 3. 250 ft.
" " 1 ~ " " " 160 •
" " 346
" k 210 " " " 200 " " 75 ".
" " 270 " " " 225 " " $40 a
Richmond Shaft No. 2, 450 Ft. Dee
P•
Drift at 280 ft. Level, N. 70 ft., S. no entry,orosa-ot.30 ft
" " 380 " " " 150 "~ " 325 Ft. " " 10 " I
" " 440 " " " ~ " 125 ", '
}
Total number of feet in shafts, 750, I
met, $40,00 per foot. ~
Total number of feet in drifts, 2iB50,
Cost, $7. per foot. i
Total number oP feet in orosa-outs, 40.
met, $10. per foot. 1
j Total No. it. i'n development, 3,840.
r
Average tonnage, 20 tone peS m,nth. ~ili
' ?LEN EMPLOYED.
No.employed,
• 2 mina8e, $3.00 for 8 hour shift.
1 engineer, 3.60 " ^ ".
1 superintendent, 4.00 " •
Average No. of men employed for the yenr has been Siva.
Cost of fuel $4.b0 per,ton. abet of Timber, ;30 ~ to $1.~0 per
etiok. Lb et of ponder, $12.70 per hundred, all supplies
delivered nt the mine.
Average neeay value ore per ton $20. Chat per ton for trane-
porting ore, $2.3b; aoet per ton treatment of ore, $8.00