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Folder 30 I Tracings 9000-9999
I-9040 Plan of trespass by M. R. Clements at Plum Creek Mine, 1944

Operator: New York & Cleveland Gas Coal -- Mine: Plum Creek -- Notes: A. B. Coleman; Thomas King heirs; Samuel Elliott -- Location: Plum Township (Allegheny County).

I-9056 Plan showing proposed lease to Salvatore Gallo at Ramsey Mine, 1945

Operator: Pittsburgh Coal -- Mine: Ramsey -- Notes: R. Smith; J. Hill; J. Faithful; P. Thompson; E. Thompson; Pittsburgh Coal Co. surface -- Location: Mount Pleasant Township (Jefferson County, Ohio).

I-9074 Plan showing proposed lease to William Piccolomini at Arnold Mine, 1945

Operator: Pittsburgh Coal -- Mine: Arnold -- Notes: Pittsburgh, McKeesport & Youghiogheny Railroad; James Hamer; Louis Kendall; Mansfield Cemetery; William Kendall; Woodvale Cemetery; Wilson McCrory -- Location: Washington Township (Fayette County).

I-9152 Survey map of the property of A. W. and A. E. Marshall, undated

Operator: Pittsburgh Coal -- Location: Middleton Township (Columbiana County, Ohio).

I-9153 Survey map of the property of John C. Miller, undated

Operator: Pittsburgh Coal -- Location: Middleton Township (Columbiana County, Ohio).

I-91545 Survey map of the property of James W. Makall, undated

Operator: Pittsburgh Coal -- Location: Middleton Township (Columbiana County, Ohio).

I-9155 Survey map of the Hannah F. Wilson tract, undated

Operator: Pittsburgh Coal -- Location: Middleton Township (Columbiana County, Ohio).

I-9158 Plan of property to be conveyed to Pennsylvania and Pittsburgh & Lake Erie Railroads, sec. 36, 1946

Operator: Pittsburgh Coal -- Location: Middleton Township (Columbiana County, Ohio).

I-9170 Plan showing expansion over a series of years, undated

Operator: Pittsburgh Coal -- Mine : Shaw -- Notes: Fit to H-5073 -- Location: Robinson Township (Washington County).

I-9218 Engineering Department Records chart: List of mines operated by Pittsburgh Coal Co., undated

Operator: Pittsburgh Coal -- Mine: Lindley; Montour No. 4; Montour No. 9; Westland; Mathies; Montour No. 10; Crescent No. 1; Mongah; Ocean; Somers; Warden -- Notes: Intended to show amount of coal removed from each mine.

I-9220 Survey Dates and Colors (sheet 1 of 7), 1899-1940

Chart listing survey dates and their corresponding colors

I-9220 Survey Dates and Colors (sheet 2 of 7), 1941-1962

Chart listing survey dates and their corresponding colors.

I-9220 Survey Dates and Colors (sheet 3 of 7), 1899-1931

Chart listing survey dates and their corresponding colors.

I-9220 Survey Dates and Colors (sheet 4 of 7), 1931-1967

Chart listing survey dates and their corresponding colors.

I-9220 Survey Dates and Colors (sheet 5 of 7), 1931-1967

Chart listing survey dates and their corresponding colors.

I-9220 Survey Dates and Colors (sheet 6 of 7), 1967-1973

Chart listing survey dates and their corresponding colors.

I-9220 Survey Dates and Colors (sheet 7 of 7), 1967-1982

Chart listing survey dates and their corresponding colors.

I-9228 Plan showing trespass on the B. C. Jackman tract at Crescent No. 1 Mine, 1951

Operator: Pittsburgh Coal -- Mine: Crescent No. 1 -- Notes: Boundary line -- Location: West Pike Run Township (Washington County).

I-9237 Library Rack Prints, undated

Chart of library rack prints : to be posted in the library office, referred to constantly, and will show how nearly up to date are the prints in the library rack for all mines.

I-9377 Plan showing buildings at Crescent No. 1 Mine's third hill, 1954

Operator: Pittsburgh Coal -- Mine: Crescent No. 1 -- Location: West Pike Run Township (Washington County).

I-9394 Joint Coal & Gas Committee's gas well pillars study, showing examples of pillar plans for various depths of cover, undated

Notes: Scale is 1 inch = 200 feet; No place to exceed 15' in width; Pillars to be a minimun of twice the width of the excavation driven.

I-9394 The Underground Storage of Gas, 1952

Study entitled "The Underground Storage of Gas" by R. J. Murdy, chief geologist for the New York State Natural Gas Corporation, for presentation at the Mine Inspectors Institute of America, Sterling Hotel, Wilkes Barre, Pa., June 9-11, 1952.

I-9394 Exhibit A: method of casing through a worked out coal seam, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit B: method of casing through two or more worked out coal seams, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit C: method of casing through one or more workable coal seams where coal has not been removed, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit D-1: use of packers to divert gas into inside casing, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit D-2: use of packers to divert gas into inside casing, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit E: plugging wells in an area not underlain by workable coal, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit F: plugging wells in an area underlain by workable coal, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit G-1: plugging of wells using a combination of cement and sand pumpings, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Exhibit G-2: plugging of wells using only sand pumpings, mud or other equally non-porous material as approved by the Division, undated

Presented by the Commonwealth of Pennsylvania Dept. of Mines and Mineral Industries, Oil and Gas Division.

I-9394 Letter from W. Roy Cunningham to well operators and coal mine operators in Southwestern Pennsylvania, April 29, 1957

Letter relates to a study of well failures by the Pennsylvania Dept. of Mines and Mineral Industries.