MINEBK00728

• County: Boulder
• Volume: 17
• Document: Inspectr
• Suffix: A

Cold Spring - 3,
S IIRPdr,CE PLANT .
The svsfaoe plant consists of an 8" a 10"
electric driven air oompresser and an 18 H. P.
eleotrio driven hoist. It is equiped with a positive
indicator and is operated from the hoist. The age of
the engineer is 20 years, Hae tad 4 years experience
and is not addicted to the use of intoxicating
liquors.
The abaft house is frame covered with iron. The
dimensions of the building era 24'' x 40'.' The smith-
.
shop and change room are in shaft house. The head
frame is composed of 2 posts 8" x 8" native pine
timber 24' high with 36" eheave~.:wheel. Ore bins of a
capacity of r15 tone east of shaft, into- which ore ie
trammod.
Pr.otoction against fire is provided by over head
tank and hose. The oollar of shaft is of sufficient
Height to prevent persons from falling or tripping in
shaft. Is also pxovidod with good and 9uffioiont dour
to prevent material from falling in shaft.
E X P L O S I V E S
Dupont powder 40iu, monaroh fuee, 5X oape, and
vroodon tamping bare aro used. Exnlopives are taken
down daily as aped. The average amount of powdor kop
in storage is 600 pounds. It ie kept in a frame
magazino oovorod with iron and sitv.ated 100 foot from
shaft hou.pe. All oily aro ptorod in shafthouso.
M I N I N G & MINE ~1 E T H O D S.
Tho main oponing is a phaft 260 ft. doop and is
oloso oribbod for 30 ft. 1;ho balnnoe boing stullo
posts and hanging lacod with leggin. Tho shaft 4'x8'
is dividod into two aompartmonts malting a hoiot way
and laddorway. Tha laddorway oonl;ains air pipop.