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Mountain Slope
(Sibley Mountain Slope)
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YearOperation NameNumberTypeOpeningDistrictCityCountyCompany NameRailroad Shipments (tons)Railroad to MineTruck Shipments (tons)Total Production (tons)Days WorkedEmployeesNotes
1949Mountain Slope MineSlope5Ransom Twp.LackawannaMountain Slope Coal Co.6,0456178,65819817Run by Joe Keating, operation was located just above the Old Forge-Ransom Twp line, 100 yds to the right of the St. Michaels Holy Cross Cemetery. Coal prepared at Morgan and Kinz breakers.
1950Mountain Slope MineSlope5Ransom Twp.LackawannaMountain Slope Coal Co.10,97258212,14822416Coal prepared at Waddell and Supreme breakers.
1951Mountain Slope MineSlope5Ransom Twp.LackawannaMountain Slope Coal Co.5,5841,3948,75415920Coal prepared at Pompey, Waddell, Ace, Mt. Alden, Morgan, Russell and Capone breakers.
1952Mountain Slope MineSlope5Ransom Twp.LackawannaMountain Slope Coal Co.3,1623,5168,68017918Coal prepared at Ace, Morgan and Russell breakers.
1953Mountain Slope MineSlope5Ransom Twp.LackawannaMountain Slope Coal Co.8094,4487,39021019 
1954Mountain Slope MineSlope5Ransom Twp.LackawannaMountain Slope Coal Co.1,3122,1385,16623418Also labeled as (Keating's) in report. Coal prepared at multiple breakers.
1955Mountain Slope Mine5Ransom Twp.LackawannaMountain Slope Coal Co.3,5811,9918,46624517Also labeled as (Keating's) in report. Coal prepared at Morgan, Ace and Simpson breakers.
1956Mountain Slope Mine5Ransom Twp.LackawannaMountain Slope Coal Co.3,4671,8607,66425714Coal prepared at Morgan, Ace DeAngelis and Northwest breakers.
1957Mountain Slope Mine5Ransom Twp.LackawannaMountain Slope Coal Co.5,8126,28314,25024814Coal prepared at Northwest and Ace breakers.
1958Mountain Slope Mine5Ransom Twp.LackawannaMountain Slope Coal Co.5,1411,88811,40118814Called Sibley Mountain Slope. Coal prepared at Ace and Northwest breakers.
1959Sibley Mountain Slope Mine5Ransom Twp.LackawannaMountain Slope Coal Co.4,7191,64711,36114015 Coal prepared at Ace and Northwest breakers.
1960Sibley Mountain Slope Mine5Ransom Twp.LackawannaMountain Slope Coal Co.5,3174,47212,36020815Coal prepared at multiple breakers.
1961Sibley Mountain Slope Mine2Ransom Twp.LackawannaMountain Slope Coal Co.6,273Truck 13,93014,24424716Coal prepared at Ace, Raymond and Bel Air breakers.
1962Sibley Mountain Slope Mine2Ransom Twp.LackawannaMountain Slope Coal Co.8581,6457,15210517Coal prepared at Ace, Raymond and Bel Air breakers.
1963Sibley Mountain Slope Mine3Ransom Twp.LackawannaMountain Slope Coal Co.5,9874,59212,82522914Coal prepared at Bel Air, Harry E. and Dicksville breakers.
1964Sibley Mountain Slope Mine3Ransom Twp.LackawannaMountain Slope Coal Co.0Truck 17,7027,70223116Coal prepared at Bel Air Breaker.

Note 1: Added, does not appear in the mine inspection report.