Bunker Hill Hoist Showcases Model Mine Lift Design
The Bunker Hill hoist is described as a model machine designed for lowering loaded mine cars and lifting men. It uses an automobile-style clutch, ball bearings, and a two-brake system, with safety devices to prevent over winding and overspeed. Dynamic braking via a Ward Leonard style control was rejected in favor of a DC motor generator dynamic brake for slow speed handling.
MENTIONED IN THIS ARTICLE
Bunker Hill Company
Kellogg Tunnel
Bunker Hill
Welch
Igner-Ward-Leonard
Metiny
Ajax car features new dumping and coupling innovations
The Ajax car offers up to 48 cubic feet capacity with a standard 35 and can be dumped by one man. It uses an 18 inch gauge track and a lever with 850 pounds lifting power to 100 pounds pressure, plus a door mechanism to prevent sudden load movement. A strengthened steel floor and back driven coupling links improve durability and safety during drawhead contact.
MENTIONED IN THIS ARTICLE
Ajax
Coeur d'Alene Mining Firms List Assessments and Delinquent Sales
A regional notice lists mining companies in Coeur d Alene with levied assessments and due dates. Companies include Ajax Mining Co, Big Elk Mining Co, Cedar Creek Mining & Development, Giant Mining & Development, Hypotheck Mining & Milling, Lookout Mountain Mining, Mayflower Mining, North Bunker Hill Mining, North Star Mining, Silver Mountain Mining, Square Deal Mining & Milling, Silver Dale & Big Hill Mining, Sonora Mining & Milling, Syndicate Mining & Exploration. Each entry shows levy amount, due date, treasurer, and delinquent sale date with locations such as Spokane Wallace Kellogg Potlatch Wardner Toeur d Alene Idaho.
MENTIONED IN THIS ARTICLE
Big Elk Mining Co
A.hh. Featherstone
Wallace
Cedar Creek Mining & Development
William Becker
Giant Mining & Development Co
EB. BR. Turk
Lookout Mountain Mining Co
W. L. Penney
Kellogg
Mayflower Mining Co
W. W. Smith
North Bunker Hill Mining Co
N. T. Hardy
Kelogg
North Star Mining Co
T. S. Tweed
Silver Mountain Mining Co
Phil Tice
Potlatch
Daho
Square Deal Mining & Milling Co
FW. Reed
Toeur d'Alene
Idaho
Silver Dale & Big Hill Mining Co
D. W. Knudson
Secretarellogg
Sonora Mining & Milling Co
W. A. Smith
Walace
Stockholders Meetings For Three Mining Firms In Wallace
Bear Creek Mining Co. special meeting at the Gyde Taylor Building Wallace March 10 to consider consolidation or transfer of property and dissolution. New Caledonia Cons Mining Co. annual meeting Kellogg First State Bank building February 27 at 3:00 p.m. Tamarack and Custer Cons Mining Co. annual meeting Wallace Neway Building February 28 at 2:00 p.m.
MENTIONED IN THIS ARTICLE
Bear Creek Mining Co
Gyde-Taylor
Wallace
W. J. Stratton
New Caledonia
Cons. Mining Co
First State Bank
Kellogg
W. Co. Straight
Tamarack & Custer Cons. Mining Co
Neway
Jerome J. Day
Rail car load restraint via tensioned steel rods
The passage describes a method to extend a railcar's life by relieving frame strain. Two steel rods run lengthwise through the frame and connect with draw heads. These rods are kept under greater tension than the frame, so moving trains transfer the load strain to the rods rather than the car frame.
Daily Quotations of Silver Lead Zinc and Copper Basis of Settlement
The accompanying table shows daily quotations for silver, lead, zinc and copper as set by the Engineering and Mining Journal and used in smelter contracts. Values are converted to New York and St Louis cash equivalents, with silver in cents per ounce and other metals in cents per pound. Copper is delivered, meaning the seller covers freight from refinery to destination. Quotations apply to Prime Western brands.
MENTIONED IN THIS ARTICLE
Engineering and Mining Journal
New York
St. Louis
Also Mentioned on This Page
Tor
Hercules
Coeur d’Alene Mining Companies
Ajax Mining Co
J A. Havighorst
Ti W
11Th Avenue
Spokane
Hypotheck Mining & Milling Co— I
Otto A. Olsson
Syndicate Mining & Exploration Co
Louis Sevens
Wardner
Joy Wood
Servensville
Poultry
Paul B. Towne Tīkoa, Wīih
Wallace Stock Exchange
Coeur D'Alene
Coeur D'Alene Hardware & Foundry Company
the Interstate Utilities
James F. Howarth Company
Wallace, Idaho
Wallace and
The
Coeur D'Alenes
N.Y Stl. Com
Gast Electro
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