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	Historical Society of Berks County PA / Gravity Railroad
		A map from 1890 showing the course of the Mount Penn Gravity Railroad.
		One of the Mt. Penn Gravity Railroad's locomotives in the station at Mineral Springs Park.
		One of the two Shaygeared Locomotives that moved the cars up the mountain until 1898 when the Gravity Railroad was electrified.
	www.berkshistory.org /gravity (335 words)

	Highbeam Encyclopedia - Search Results for Gravity
		A body falling freely toward the surface of the earth undergoes an acceleration due to gravity of 32 ft/sec 2 (9.8 m/sec 2), which is symbolized by g.
		For a tall building, where the pressure from the mains at street level is insufficient to raise the water to the upper floors, water is pumped up to the standpipe and fed by gravity into the system.
		A comparison of reagent strips and the refractometer for measurement of urine specific gravity in hospitalized children.
	www.encyclopedia.com /SearchResults.aspx?Q=Gravity&StartAt=31 (636 words)

	Delaware and Hudson Canal History
		Together with the Pennsylvania Coal Company gravity railroad, the D and H Canal Company expanded, struggled and transformed throughout the 19th century to become part of a 171-mile transportation system from Pittston, PA to Kingston, NY before its demise in 1898.
		The D and H Canal and Gravity Railroad was a system of transportation between northeastern Pennsylvania coal fields — owned by Philadelphia businessmen William and Maurice Wurts — and ports of New York and New England.
		In its early years, the D and H Canal was buffeted by a wide variety of troubles: seepage and settling of the banks, a regional cholera epidemic, opposition by Delaware River raftsmen, fluctuations in the national economy, and resistance to the use of anthracite.
	www.pocono-lake-region-realtor.com /delaware_and_hudson_canal.htm (1209 words)

	News \| TimesDaily.com \| TimesDaily \| Florence, Alabama (AL) (Site not responding. Last check: 2007-10-09)
		A gravity railroad is a railroad on a slope that allow cars carrying minerals or passengers to coast down the slope by the force of gravity alone.
		Some gravity railroads were designed to allow the weight of the descending loaded cars to lift the empty cars back up to the top, using a cable looped around a pulley at the top for a portion of the line.
		The Mauch Chunk Gravity Railroad hauled coal and passengers from 1827 until 1933, and might possibly be restored.
	www.timesdaily.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=gravity_railroad (433 words)

	First Railroads in North America
		Beginning with a line on Boston's Beacon Hill, in 1795, pioneering railroads in North America emerged as part of the long British development of railways before the general use of the locomotive steam engine, from about 1600 through 1830.
		Not germane to the functional definition of a particular line of rails, and hence to questions of its classification as a railroad, are: the source of motive power, kind of material for rails and supporting ties (sleepers), varieties of things transported, or classification under law as a private or public carrier.
		Fourth, Erskine Hazard, White's junior partner, was sent on a tour of UK railroads in 1826, which he described in an article in one of the early numbers of the Journal of the Franklin Institute.
	cprr.org /Museum/First_US_Railroads_Gamst.html (5083 words)

	Nevada Gravity Interpretation
		Gravity anomalies have been shown to have a direct relationship to the general locations of oil fields in Railroad Valley, Nevada (Guion and Pearson, 1979, RMAG Guidebook).
		The magnetic expression of the latter lineament is much weaker in the area of Railroad Valley than in areas to the northwest, where the magnetic anomalies are related to a linear mafic dike swarm (Zoback and Thompson, 1978).
		The gravity data clearly indicate that the strongest density contrast, interpreted as a fault with significant throw, is west of the range front by a distance which varies from a fraction of a mile at Eagle Springs Field to about three miles along the Warm Springs lineament.
	www.gravmag.com /nevada.html (1081 words)

	Minisink Valley Historical Society - the Delaware and Hudson Canal and Gravity Railroad
		The D and H Canal and Gravity Railroad was a system of transportation between northeastern Pennsylvania coal fields — owned by Philadelphia businessmen William and Maurice Wurts — and ports of New York and New England.
		In its early years, the D and H Canal was buffeted by a wide variety of troubles: seepage and settling of the banks, a regional cholera epidemic, opposition by Delaware River raftsmen, fluctuations in the national economy, and resistance to the use of anthracite.
		By the turn of the 20th century in the Upper Delaware River Valley, the Erie Railroad was thriving and the D and H Canal was abandoned.
	www.minisink.org /delhud.html (2946 words)

	Welcome to the Shohola Glen Gravity Railroad Web Page from Shohola, Pennsylvania.
		The Shohola Glen Switchback Gravity Railroad was constructed in 1886 by John Kilgour to provide transportation to the Shohola Glen Amusement Park from the Shohola depot on the Erie Railroad about a mile from the main entrance of the park.
		The railroad was constructed on a gauge of 4 foot 3 inches, using track, four coaches and cables salvaged from the Pennsylvania Coal Company Gravity Railroad which had closed a year earlier after being replaced by a standard gauge Wyoming Division of the Erie Railroad.
		The Gravity RR coach "Pioneer" was preserved and resides in Hawley, the eastern terminus of its original run.
	www.shohola.com /gravity (2509 words)

	Gravity Railroad - Wayne County Historical Society (Site not responding. Last check: 2007-10-09)
		The Gravity Railroad was suggested by engineer Benjamin Wright, engineer of the company, as a more practical means of hauling coal over the Moosic Mountains than sleds and wagons used previously.
		Carbondale, an elevation of 1,200 feet, the Gravity rose to 1,907 feet at Rix's Gap by means of five planes.
		The Gravity was superseded by the Erie and Wyoming Valley Railroad, and in 1885 the first passenger train made a trip from Hawley to Dunmore.
	www.waynehistorypa.org /gravityrr.asp (479 words)

	Switch Back Home Page
		The Switchback Gravity Railroad Foundation has been successful in obtaining grants from the Delaware and Lehigh National Heritage Corridor Commission and from the Department of Community and Economic Development, State of Pennsylvania.
		The purpose of the grant awards is to study the feasibility of preserving and interpreting the remains of the Switchback Gravity Railroad on top of Mount Pisgah and developing a transport system for public access using the Pisgah Plane.
		The Switchback Gravity Railroad was the second railroad in the United States and the first railroad in Pennsylvania.
	www.switchbackgravityrr.org (578 words)

	Railroad History
		Thurs, on April 24, 1832, the New York and Erie Railroad Company was incorporated by the New York State Legislature, with the power to construct a railroad from the City of New York to a point on Lake Erie.
		The official opening of the railroad was January 23, 1871 over 2 years before the completion of the "Midland." By agreement with the Erie, the actual operation was handled by the Erie crews and equipment.
		The railroad quickly became a part of community life and at the end of the first month of operations, the Port Jervis Union reported-good passenger and freight revenues.
	www.sullivancountyhistory.org /new_page_8.htm (1163 words)

	Railroad Logging in the Klamath Country
		It is hard to imagine an area better suited for railroad logging than the park like pine forests of south-central Oregon, a gently rolling country where railroads could be built with a minimum of cost.
		Railroad Logging in the Klamath Country is the fascinating story of the logging railroads of this area.
		Ranging in size from Ackley Brothers short, two-mile gravity railroad at Keno, to the extensive systems of Brooks-Scanlon and Weyerhaeuser, they're all here.
	osorail.com /Oso_Publishing/klamath.html (209 words)

	Science Camp Watonka - Local Area (Site not responding. Last check: 2007-10-09)
		The “Gravities” connected mines in the Lackawanna and Susquehanna River valleys to the Delaware and Hudson Canal in the valley of the Lackawaxen River.
		Both railroads were formed from alternating sections of inclined plans and 'levels'.
		The second Gravity Railroad which runs by the Camp and used by us for hiking and mountain biking, was built by the competing Pennsylvania Coal Co in 1850 to transport coal from the coal fields to Paupack Eddy (Hawley) for shipment by canal and river to New York City.
	www.watonka.com /cgi-local/wpage?loc (655 words)

	Early Railroad Transportation
		Application having been made to the Legislature for a charter for a railroad company to ply between Philadelphia and Norristown (See stock certificate for this railroad), an act was passed on February 17, 1831, incorporating the Philadelphia, Germantown and Norristown railroad.
		The original object of the company was to construct a railroad from Peter's Island, four miles from Philadelphia, where connection was made with the Philadelphia and Columbia Railroad to Reading, a distance of fifty-four miles.
		Much of the success attending the Pennsylvania Railroad is due to the almost military rigidity with which its workings were arranged under the inspiration of its chief engineer and first president, J. Edgar Thompson.
	www.ushistory.org /Philadelphia/railroad.htm (4242 words)

	"Black Diamonds", Experience PA's Anthracite Mining Heritage
		The PA Coal Co. gravity railroad was in operation between Pittston and Hawley from 1850 to 1885.
		A gravity railroad was built in 1827 to carry coal from the mines near Summit Hill to the Lehigh Canal at Mauch Chunk.
		This gravity railroad car was used on the Pennsylvania Coal Company Railroad.
	www.pacoalhistory.com /things_to_do/markers.html (692 words)

	Wright's Push Gravity
		One of the first arguments against Push Gravity is that if true, we would all be pushed off the planet, however, Walter only claims the PUSH concept to be valid and obvious with regard to CELESTIAL BODIES.
		If the 40-year veteran of Southern Pacific railroad yards is correct, of course, his ideas would put him in a class with Copernicus, Darwin and Einstein.
		They expected the pull of gravity, which is supposed to be in the center of the earth, to pull these two plumb bobs closer together.
	keelynet.com /gravity/wright.htm (2312 words)

	Existing Wayne County, PA Stations
		Here is my educated guess on the cornerstone which reads "1875." It was removed from the passenger station which was constructed in 1875 with the establishment of passenger service, and then placed in the present location when the existing freight station was constructed for the state hospital and prison.
		The gravity railroad was converted to standard gauge in 1899 and operated until 1931.
		The original gravity line ran from Carbondale to Honesdale in northeastern Pennsylvania and transported coal from the mines to the Delaware and Hudson Canal basin in Honesdale.
	www.west2k.com /pastations/waynepa.htm (220 words)

	Genealogy of Northeast Pennsylvania
		Rev James Cullen, a pioneer Catholic priest, held servies in 1852 for the Irish Catholics attracted to Dunmore from Carbondale by the gravity railroad and opening of the mines.
		The Pennsylvania Coal Company gravity railroad, running between Pittston and Hawley and which passed through Dunmore, was completed in 1849.
		The railroad and coal company was absorbed by the Erie and Wyoming Valley Railroad Company in 1884, the gravity system abandoned, locomotive power installed about the same time the shops were built in the borough.
	www.users.fast.net /~alkeis/resources/lackawanna/dunmore.html (2917 words)

	History
		The idea was to transport coal from Carbondale's mines to Honesdale via a gravity railroad and from Honesdale to Roundout, New York, by a canal.
		With the success of the gravity railroad and canal system, additional gravity lines were extended from Carbondale down throughout the valley.
		The railroad company controlled a network of coal mines that had mined and shipped two million tons of coal by 1868.
	www.lackawannacounty.org /history.aspx (1448 words)

	Mt. Penn Gravity Railroad
		These were built to draw the interest of more people to riding the gravity railroad.
		It is estimated that up to 2000 people rode on the railroad on the average weekend and up to 80,000 people per year.
		Today, about half of the railroad right-of-way has been paved over, some of it has been bought by private homeowners, but some has been all but lost to the woods.
	www.amusementparknostalgia.com /gravity.html (658 words)

	AmericanHeritage.com / JOSIAH WHITE’S GRAVITY RAILWAY
		At a time when America had no railroads, he described a system consisting of a train of wagons whose wheels would ride down the mountain on twin rails, to be built when there was enough business to justify the expense of construction.
		The Switch Back Gravity Railroad was scrapped in 1937, but the Switch Back Gravity Railroad Foundation, a nonprofit group in Jim Thorpe, Pennsylvania, is dedicated to bringing it back to life.
		The group has arranged the construction of a twenty-eight-foot working scale model of the railroad (which is on display at the Mauch Chunk Museum), produced a video using original photos, drawings, and 1920s motion-picture footage of the line, and commissioned feasibility studies on the prospects of resurrecting it.
	www.americanheritage.com /articles/magazine/it/1997/4/1997_4_48.shtml (3158 words)

	Simulation of the Switch Back Gravity Railroad
		Except for the planes, the return trip was powered by gravity.
		In the very first couple of years of my involvement with the Switchback Gravity Railroad Foundation, a group which sought to restore the historic Switch Back Railroad, I thought the idea of simulating the railroad was an idea whose time had come.
		I was fortunate that this was a gravity railroad because, using MICRODEM's contour overlay facility, I was able to lay in an always-descending route.
	home.stny.rr.com /wniehoff/sbsim.htm (2011 words)

	NASAexplores - Express Lessons and Online Resources
		Zero Gravity can be pressure-sprayed, applied with a brush, or poured, depending on the surface and conditions.
		Until Zero Gravity, railroad workers kept the tracks passable with heaters to warm the rails and by removing ice and snow with picks and shovels.
		A tank of Zero Gravity and a dispensing system can now be placed underneath the train car, so that the fluid is applied as the train runs its route.
	www.nasaexplores.com /show2_articlea.php?id=02-051 (614 words)

	Pocono Mountains - Honesdale, PA
		This, the Birthplace of the American Railroad located in Wayne County, is where visitors can find anything from shopping at friendly downtown boutiques, themed railroad tours, bits of American history, or simple relaxation in the beautiful outdoors.
		Century involvement in transporting coal by gravity railroad from Carbondale, to the towpaths of the Delaware and Hudson Canal, before it finally reached New York City.
		This is where coal was transferred from the Gravity Railroad onto canal boats where it began its 108-mile journey to New York City.
	www.800poconos.com /articles/index.cfm?action=View&ArticleID=7 (562 words)

	Railroad Timeline History
		The Baltimore and Ohio Railroad is chartered to run from Baltimore to the Ohio River in Virginia.
		The Switch Back Gravity Railroad in Pennsylvania began operation in May of 1827 before work began on the BandO.
		It was the second railroad in the U.S., the first railroad in Pennsylvania and the first common carrier railroad in the U.S. Delaware and Hudson Canal Co. builds a railroad from their mines to the termination of the canal at Honesdale.
	www.sdrm.org /history/timeline (2445 words)

	THE BRIDGE LINE HISTORICAL SOCIETY - Bulletin Volume 5-09 (Site not responding. Last check: 2007-10-09)
		All ran on steam, with the DandH operating a Gravity Railroad between Carbondale and Honesdale from 1829, onward until it converted to steam in 1900.
		In the 1880's, the PCC Gravity narrow gauge line between Hawley and Port Griffith on the Susquehanna River was converted to steam.
		The Delaware Lackawanna and Western Railroad came to Scranton in the 1850's as the Leggett's Gap Railroad.
	www.bridge-line.org /blhs/blhsv0509.html (2145 words)

	Classic Trains Magazine - Railroading History, Train Travel, Steam Locomotives - Steam locomotive profile: 0-4-0
		Built for the Delaware and Hudson Canal Co., its intended use was to haul coal wagons on DandH's gravity railroad between Carbondale and Honesdale, Pa. However, after only two trial runs, it became painfully evident that the seven-ton engine was too heavy for DandH's track, and it was set aside.
		Built in 1831 by the West Point Foundry at a cost of $3,200, it was the first steam locomotive to haul passengers in New York state (Albany to Schenectady in August 1831).
		But once trains started rolling on a regular basis, the railroads began to analyze their operations and quickly recognized the benefits of running trains at more than a snail's pace.
	www.trains.com /ctr/default.aspx?c=a&id=103 (765 words)

	DHTHC -- Delaware & Hudson Transportation Heritage Council
		is a partnership of public, private and not-for-profit organizations committed to the appreciation and preservation of the historic resources of the Delaware and Hudson Canal and Gravity Railroad.
		The Delaware and Hudson Canal and Gravity Railroad, a 124-mile long long transportation system between the Lackawanna Valley in Pennsylvania and the Hudson River, was America's first million-dollar private enterprise.
		The DandH Gravity Railroad--a 16-mile long railroad, consisting of inclined planes and levels, connected the coal fields in the Lackawanna Valley with the DandH Canal at Honesdale.
	www.canalmuseum.org /dhthc/index.html (213 words)

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