Identifier: coalmininginilli13andr (find matches)
Title: Coal mining in Illinois
Year: 1915 (1910s)
Authors: Andros, S. O Illinois State Geological Survey University of Illinois (Urbana-Champaign campus). Dept. of Mining Engineering United States. Bureau of Mines
Subjects: Coal mines and mining
Publisher: Urbana, (Ill.) : University of Illinois
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
he district the steam-shoveldigs a permanent haulage-way along one side of the area tobe stripped. At the end of this haulage cut a thorough-cutabout 50 feet wide is made along the boundary of the property.The exposed coal is mined behind the shovel as shown infig. 30. When the thorough-cut reaches the property linethe shovel turns around and digs the overburden from anotherstrip about 50 feet wide depositing the spoil in the pit madeby the removal of the coal exposed by the thorough-cut. Fig. 31 shows a steam-shovel which elevates Hie spoilby a belt-conveyor and deposits it along the side of the shovelcut. This has been replaced by a revolving steam shovel witha very long beam. The total cost of mining coal by stripping the overburdenvaries on a daily output of 300 tons per day from 40 to 50cents per ton loaded on the cars. Stripping is also done in District VI near Duquoin wherethe overburden is removed with horse-scrapers. In DistrictsI and VII steam-shovels are used for stripping.
Text Appearing After Image:
DRAINAGE Coal mines in Illinois are not troubled with large quanti-ties of water. Generally the shallowest mines are the wettestbecause surface water seeps through the roof or, where the caprock is lacking as in some places in Districts II and IV, sandand water flow into the mine through caves to the surface.The most water recorded in Illinois is in a mine in District IIwhere approximately 1,000,000 gallons per 24 hours flow intothe mine through caves. This water is pumped out throughdrill holes by two automatically-started electric turbine pumpsof ?50 gallons per minute capacity; two stationary electricpumps of 180 gallons per minute capacity; and iive portableelectric pumps discharging 70 gallons per minute. Waterflows into some mines through channels in the floor under thecoal. Often the only sources of water in Illinois mines arethe hoisting and air shafts and sometimes the faces of rooms.If the water collects in swamps in entries and it is necessaryto install pumps inby they are

Note About Images