A Glossary of Terms Used in Coal MiningE. & F.N. Spon, 1883 - 296 sider |
Inni boken
Resultat 1-5 av 51
Side 3
... yards above the underneath road , and if a seam of coal be conveniently situated in which to construct it , it will not be an expensive plan . See Fig . 2. ( The dotted lines show the position of an ordinary crossing . ) AIR - END WAY ...
... yards above the underneath road , and if a seam of coal be conveniently situated in which to construct it , it will not be an expensive plan . See Fig . 2. ( The dotted lines show the position of an ordinary crossing . ) AIR - END WAY ...
Side 7
... yards , leaving stoops to protect the roof and roads . BACK - STAY ( Y. ) . A wrought - iron forked bar attached to the back of trams when ascending an inclined plane , Fig . 4 . BAFF - ENDS . Long wooden USED IN COAL MINING , ETC. 7.
... yards , leaving stoops to protect the roof and roads . BACK - STAY ( Y. ) . A wrought - iron forked bar attached to the back of trams when ascending an inclined plane , Fig . 4 . BAFF - ENDS . Long wooden USED IN COAL MINING , ETC. 7.
Side 10
... yards width . See diagram , Fig . 7 . Fig . 7 . 2. A bar of timber for supporting the roof of the mine , or for carrying any heavy load . BALL IRONSTONE ( S. S. ) . Strata containing argilla- ceous ironstone in the form of nodules ...
... yards width . See diagram , Fig . 7 . Fig . 7 . 2. A bar of timber for supporting the roof of the mine , or for carrying any heavy load . BALL IRONSTONE ( S. S. ) . Strata containing argilla- ceous ironstone in the form of nodules ...
Side 13
... yards . BARRIER SYSTEM ( N. ) . The most modern and ap- proved method of working a colliery by pillar and stall , where solid ribs or barriers of coal are left in between a set or series of working places ; the width of such barriers ...
... yards . BARRIER SYSTEM ( N. ) . The most modern and ap- proved method of working a colliery by pillar and stall , where solid ribs or barriers of coal are left in between a set or series of working places ; the width of such barriers ...
Side 17
... yards apart , the iron- stone is then worked away between the pits and lastly taken from Fig . 13 . the sides of the shafts , thus forming them into bells . See diagram , Fig . 13 . BENCH ( Pa . ) . 1. A small tram or car of about 7 ...
... yards apart , the iron- stone is then worked away between the pits and lastly taken from Fig . 13 . the sides of the shafts , thus forming them into bells . See diagram , Fig . 13 . BENCH ( Pa . ) . 1. A small tram or car of about 7 ...
Andre utgaver - Vis alle
Vanlige uttrykk og setninger
apparatus bank bars beds blasting borehole boring rods brattice butty cage carried chain clay cloth Clunch coal measures coal seam Coal-field colliery constructed crown 8vo cylinder débris diameter drift driven drum edition empty engine plane explosion face fault feet fire fire-damp fixed floor furnace goaf ground haulage heading hole horse inbye inches inclined plane iron iron pyrites ironstone kind Kirving length load long-wall lower machinery minerals mines P. L. SIMMONDS pillar of coal pipe pit bottom pit-shaft plates prop pulley pumps raised rock roof running safety lamp sandstone seam of coal self-acting shale short side sinking pit slack solid coal sprags stall steam stone strata stratum surface thickness thin timber tool trams Treatise tubs underclay underground road upcast shaft ventilation vertical wagons wall wedging crib weight wheels winding engine winding rope wooden yards
Populære avsnitt
Side 297 - BAKER. — Long-Span Railway Bridges : Comprising Investigations of the Comparative Theoretical and Practical Advantages of the various Adopted or Proposed Type Systems of Construction ; with numerous Formulae and Tables. By B. BAKER. I2mo. $1.50...
Side 297 - Section I. On the Equality and Distribution of Forces — Section II. Resistance of Timber — Section III. Construction of Floors — Section IV. Construction of Roofs — Section V. Construction of Domes and Cupolas — Section VI. Construction of Partitions — Section VII.