. Transactions of the Institution of Mining Engineers . Bar Goal Gittors. rOR twenty years these machines have beengiving satisfaction and increased output incollieries all over the world because of theirsound construction and adaptability to all phasesof mining work. They are suitable for rapid and completedevelopment from shaft to boundary in longwallor roora-and-pillar deliveries at moderate prices can begiven of any size machine with or Electric Motor,Compressed Air Turbine Motor,Compressed Air Reciprocating Motor. An expert mining staff to inspect conditions is
. Transactions of the Institution of Mining Engineers . Bar Goal Gittors. rOR twenty years these machines have beengiving satisfaction and increased output incollieries all over the world because of theirsound construction and adaptability to all phasesof mining work. They are suitable for rapid and completedevelopment from shaft to boundary in longwallor roora-and-pillar deliveries at moderate prices can begiven of any size machine with or Electric Motor,Compressed Air Turbine Motor,Compressed Air Reciprocating Motor. An expert mining staff to inspect conditions isat your disposal on request. 14-16 Cockspur ,SWl. Uits^; Kailva^ ^ M Elruria, StoW^on- lrer\t CONTENTS. ix Vol. LXII. CONTENTS. Part 4. PAGE. The North of England Institute of Mining and Mechanical Engineers :— General Meeting, Newcastle-upon-Tyne, December 10th, 1921 254 Election of Members 254 The Limitations of Coal-cutting by Machinery 254 Mean Magnetic Declination (West) for each Two-hour Interval from January 1st to January 28th, 1922, as Recorded
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectmineralindustries
