1921
District 10
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Operation NameNumberTypeOpeningDistrictCityCountyCompany NameRailroad Shipments (tons)Railroad to MineTruck Shipments (tons)Total Production (tons)Days WorkedEmployeesNotes
Black Diamond Colliery10Luzerne 1LuzerneHaddock Mining Co.141,743DL&W / LV0160,914250373 
Conlon CollierySlope 110 LuzerneJohn Conlon Coal Co.55,890D&H059,992289130 
Delaware Colliery10Plains Twp. 1LuzerneHudson Coal Co.0D&H00 653Coal prepared at Pine Ridge Breaker.
East Boston CollieryShaft 110Kingston Twp. 1LuzerneEast Boston Coal Co.105,035CNJ / D&H / DL&W / LV / PRR0154,532250416 
Henry Colliery10Plains Twp. 1LuzerneLehigh Valley Coal Co.388,010LV0471,496284740Coal prepared at Prospect Breaker, 11th District.
Louise Colliery10Luzerne 1LuzerneRaub Coal Co.54,971LV065,886197266 
Madeira Colliery10Plains 1LuzerneWilkes-Barre Colliery Co.166,902D&H / DL&W0170,449278375 
Mineral Spring Colliery10Wilkes-Barre 1LuzerneLehigh Valley Coal Co.264,276LV0300,556274507 
Miners Mills Colliery10Miners Mills 1LuzerneHealey Coal Co.24,456LV0273,38824399 
Pettebone Colliery10Kingston Twp. 1LuzerneGlen Alden Coal Co.611,628DL&W0679,866295946 
Pine Ridge CollieryShaft 110Miners Mills 1LuzerneHudson Coal Co.892,595D&H0980,1922841184 
Pine Ridge Washery10Miners Mills 1LuzerneHudson Coal Co.739D&H045,806284 Data included with colliery.
Ridgewood Colliery10Plains Twp. 1LuzerneTraders Coal Co.54,776CNJ / Erie056,849115386 
Wyoming Colliery10Plains Twp. 1LuzerneCentral Coal Co.65,950D&H068,159281158 

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