Modern business geography

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Monograph

Identifikator:: 1830562916

URN:: urn:nbn:de:zbw-retromon-217337

Document type:: Monograph

Author:: Huntington, Ellsworth http://d-nb.info/gnd/117070092; Cushing, Sumner W.

Title:: Modern business geography

Place of publication:: New York [usw.]

Publisher:: World Book Company

Year of publication:: 1930

Scope:: VIII, 352 S.; Ill., graph. Darst.

Digitisation:: 2022

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

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Document type:: Monograph

Structure type:: Chapter

Title:: Part one. The field of primary production

Collection:: Economics Books

114 Modern Business Geography To make a mine more healthful, therefore, the foul air is sucked out by “blowers” located usually at the mouth of a small air shaft, which causes fresh air to rush in through the main shaft. A visit to a mine. Perhaps the most interesting part of a mine is where the ore is being loosened, placed in cars, and started on its way to the upper world. The miner sometimes uses simply a hand drill and hammer to drill holes in the ores, but more often he is equipped with a machine drill operated by compressed air or steam. When the holes have reached the required depth, they are filled with explosives. Then a warning shout is given, and a fuse is lighted which burns slowly enough to let everyone get out of the way. Soon a muffled report is heard, and tons of the ore are hurled to the mine floor. The workmen return and pry down any loose fragments that might drop upon them. Then they shovel the ore into waiting cars, breaking with great hammers any fragments that are too large to be lifted readily. When full, the cars are pushed down to a main gallery, where they are soon picked up by a passing train and drawn to the foot of the shaft. There each car is placed in the elevator and lifted to the surface. After the ore leaves the mine it must be crushed and melted in ~~ THEWOR.L. RODUCTION OF IROOM i NE OF WET RTI Fic. 86. From North America and Europe (especially western Europe) comes most of the iron used in commerce and industry. Six great regions of ore deposits are now known: (1) the Lake Superior district; (2) the Lorraine district,.in France; (3) northern Sweden; (4) Cuba; (5) Newfoundland; (6) Brazil. Of these, the first three are now producing fields. The others have great reserves, but it is not at present profitable to work them extensively; none of the three is near to the fuel needed for smelting. In 1920, the United States smelted more than half the world’s output, Great Britain about an eighth of it, and France about a sixteenth. The amounts in Central Eurove and in Russia can onlv he estimated. as ficures are not available.

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