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This line bypassed Clearfield and extended south to Mahaffey and eventually into Indiana County. Other rail lines included the Buffalo, Rochester and Pittsburgh Railroad 's extension down Anderson Creek to Clearfield, NYC's extension to Clearfield and down the Susquehanna River to Keating, and the Bell's Gap Railroad , which ran through the ...
In 1754, George Washington led an expedition across the Allegheny Mountains, and his second-in-command wrote a letter detailing an abundance of natural luxuries including coal in Western Pennsylvania. [11] In 1761, the first actual Pennsylvania coal mine is recorded on the “Plan of Fort Pitts and Parts Adjacent” map.
It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772 and independently by Carl Wilhelm Scheele and Henry Cavendish at about the same time. The name nitrogène was suggested by French chemist Jean-Antoine-Claude Chaptal in 1790 when it was found that nitrogen was present in nitric acid and nitrates.
Both Delaware and Susquehannock power had been broken by disease and wars between Native American tribes before the British took over the Dutch and Swedish colonies and settled Pennsylvania. The first discovery of anthracite coal in the region occurred in 1762, and the first mine was established 13 years later, in 1775 near present-day Pittston ...
Fossils have been recovered from every rock type in the Llewellyn but are predominantly found in the siltstone, shale, and coal layers. The compression fossils from the Llewellyn formation are well known for the striking white color on the dark stone. An important location for these fossils is near St. Clair, Pennsylvania.
Following the work by Claude Louis Berthollet published in 1784, chemists knew ammonia to be a nitrogen compound. [23] Early attempts to synthesize ammonia were performed in 1795 by Georg Friedrich Hildebrandt. Several others were made during the nineteenth century. [24] In the 1870s, ammonia was an unwanted byproduct of making manufactured gas.
A man found frozen in a Pennsylvania cave in 1977 has finally been identified, closing the book on a nearly 50-year-long mystery. The Berks County Coroner’s Office identified the remains of the ...
Extent of the Pittsburgh coal seam in Pennsylvania, Ohio and West Virginia, excluding the deposit in Maryland. Note that the southwestern portion of the seam is of negligible economic importance. The Pittsburgh coal seam is the thickest and most extensive coal bed in the Appalachian Basin; [ 1 ] hence, it is the most economically important coal ...