Methods

File — Tube: 24

Staff Only

Scope and Contents

Longwall Method Applicable to Thick Wolf Creek Seam: Qty-1, Form-V
"Steep Pitch Mining Concepts," 10-76: Qty-1, Form-P
"A Proposed Method of Mining Very Steep Pitch Coal Beds," 11-75: Qty-7, Form-P
"A Hydraulic Mine Concept for Steep Pitching Seams," 10-80: Qty-1, Form-F
copy of "A Hydraulic Mine Concept for Steep Pitching Seams": Qty-1, Form-P
"A Proposed Method of Mining very Steep Pitching Coal Beds," 11-75: Qty-2, Form-F
"Steep Pitch Mining Concepts," 10-76: Qty-1, Form-F
"An Illustration of a Long Term Test Mine": Qty-1, Form-F
"A Hydraulic Test Mine Plan for Seams of Moderate Thickness": Qty-1, Form-F
"A Hydraulic Test Mine Plan for Thick Seams": Qty-1, Form-F
"Longwall Plan for Multiple Seam Mining," 10-87: Qty-1, Form-V
"Longwall Panel Development and Extraction Plan for Multiple Seam Mining": Qty-1, Form-V

Dates

1913-1990

Conditions Governing Access

Twenty-four hour advanced notice encouraged. Materials must be used on-site. Access to parts of this collection may be restricted under provisions of state or federal law.