MINEBK00581

• County: Clear Creek
• Volume: 13
• Document: Inspectr
• Suffix: A

?6etropolitan - 4.

•-• - = E% P Z O 3 I Y E S
' Du Pont r 40,5 - powder,; Garnan Inaoloid tune; b-~~caps and
wooden tamping bars are employed. Explosives in eacasa oY one-day's
enpply~are not atored.underground.
The average amount of explosives kept in storage ~.s.1,000~.
This ie kept in a-frame, iron-covered magazine situate 22b' west
of the portal oY the tunnel. The.magazbne is used for the storage
03 powder only, other supplies being stored in the.powor house.
Mo device is provided for thawing powder; instead, the pow-
der is plaood in the. water in the tunnel which has snttioiont
Iwarttth for this purpose.
LSIIIIaG & 11IAE }SETHODS.
Tho maln opening is a oxoss-out tunnel 3,SOU' in length.
'Phe Yirst 150' is tibbored•with posts and oaps, 10" x 10" square
jtimbore being Hood. Other parts are timbered with atolls whore
(required. At a point 2,400' from the portal the tunnel runs due
jsouth for a distanoe of 160; thonoo it rosiuoos its original oourao.
~9aversl veins have boon lntoraootod 1n running the tunnel but no
~developmoat has boon done upon thorn and'nothing ie Y.nown of the
~valuo, it any,ot the vein ti111ng. At the breast of the tunnel
Itho Metropolitan vein is interaootod. Thin vein will be developed
'at ones ae ut the pointi oT iatcraoction the vein ie tivn toot 1n
'gidth sad very promising in appaaranoo nlthough no asaaya had
been made of the vein filling at .the tine of this inspection.
.Later thn tunnel will bo 6xtended~to interaeot other wine be-
longing to the group. '
An additional exit Se proviiied by n oroea-ont tunnel,la0'
is length, dsiven•irom a point 1f,0' iron the portal of the mnin
tunnel to the eurtaoo. Thia !e kept in repair an0 Sa readily
sooeesible to the employee.
Yire-proof doors r-re not nooeeanry Went the portal ne all
buildings are at a oonaiderable diatanoe troy the tunnsl. The
yortal is provided ^ith ordint-ry xooden gates.