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The Green Tree facility provides and stores, digitally and in microfilm (aperture cards), [4] over 182,000 maps of abandoned mines. This repository contains maps of mine workings from the 1790s to the present day. [5] It serves as a point of reference for mine maps and other information for both surface and underground mines throughout the ...
Documented visits to the mine site occurred in 1837, in 1860, in August 1871, in May 1884, and possibly again in 1915 when a map surfaced in Bakersfield. Two peons, C. F. Salazar and J. A. Miklas, sold a map to ex-Sheriff J. W. Kelly and two associates for $500. [13] [14] [15] It is not clear if the partners who purchased the map ever found the ...
More recently, a World Ortelius map sold for £4,000 (about $5,000) at an auction in 2012. These maps are celebrated for their artistry and the way they reflect the geographical knowledge of the ...
Great Hewas was worked in the 18th century. A 45-inch Boulton & Watt pumping engine was installed in the 1790s. By the 19th century, the mine employed over 250 people, producing not only tin, but copper, lead, and some silver. Two smaller mines to the west, Ventonwyn and Hewas Water, worked alongside Great Hewas. The last of these mines ceased ...
Usually the mines are said to contain valuable elements or minerals such as gold, silver or diamonds. Often there is a map or other document allegedly detailing the history or location of the mine. Common to all the lost mine legends is the idea of a valuable and mysterious resource being lost to history.
The CONSOL Energy Mine Map Preservation Project is a project to preserve and digitize maps of underground coal mines in Southwestern Pennsylvania.. The project is a joint venture between the Pennsylvania Department of Environmental Protection, the United States Department of the Interior Office of Surface Mining, the University of Pittsburgh University Library System, and CONSOL Energy.
The 1790s (pronounced "seventeen-nineties") was a decade that began on January 1, 1790, and ended on December 31, 1799. Considered as some of the Industrial Revolution 's earlier days, the 1790s called for the start of an anti-imperialist world , as new democracies such as the French First Republic and the United States began flourishing at ...
The transformation of political culture : Massachusetts parties, 1790s–1840s. New York : Oxford University Press, 1983. Appleby, Joyce Oldham. Capitalism and a new social order : the Republican vision of the 1790s. New York : New York University Press, 1984. Hebert, Catherine A. A survey of the French book trade in Philadelphia in the 1790s ...