MINEBK00315

• County: Clear Creek
• Volume: 10
• Document: Inspectr
• Suffix: A

-3-
3~LOSIVES.
Forty par cent Giant powder, wooden tampinP bars, frame
cowered rit1: iron marezine, located 75 feat from bnildinFS,
contains 100 lbs of powder. The mine has a water powder
thewinv de~'ice.
EiIi IF;G.
IIain shaft,
Birtley tunnel
Birtle3 po. 2 tunnel
iii dniP llt "
Ludlow "
100 feet deep
375 "
80 "
50 "
5.0 „
Cross-cat in Eirtley tunnel 90 "
L11 material is extracted by ainale hand dri111nP. IInder-
gronnd system o` trn^~in~ is by hand, iron cnrs, 12 lb. T
rail, 18 in mare trnc?x~e. Ventilation is ;rom sur'ace
ar.d no water hcs ;Jet been e-coantered. The wader ground sys-
tem o;' li~-htinr is b; candles. To
5'CATISTICS.
T otal no. feet in alicfts 100
Coat per ft. •;j18
Total no. ;'e et in tunnels 525
Cost per :'t. ~y15
Total oo, ft. In cross cute 90
coat per :t. y10
Total ft. in de^elupment 715
men employed: 3 miners, per ei^ht hours .$3
1 superintendent
e~~erare nu. men employed for year ¢
averas-e assay •~nlue of ore per ton X10
coat of trews porting ore to mills,per ton, 60 cents.
Send blan'ss to Thomas T. Bradley, mcnarer, Idaho 3prinps,
Colo.