A Glossary of Terms Used in Coal MiningE. & F.N. Spon, 1883 - 296 sider |
Inni boken
Resultat 1-5 av 41
Side 10
... falls . BALK . 1. A more or less sudden thinning out of a seam of coal , not unfre- in quently 100 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 ...
... falls . BALK . 1. A more or less sudden thinning out of a seam of coal , not unfre- in quently 100 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 ...
Side 25
... falling down the shaft . 2. ( S. ) See Bell - mould . BONNET ROLLER , BONNET PULLEY , BONNET SHEAF . See Hat Roller . BONT or BOND . The cage and winding rope with attachments . BONTLE ( M. ) . A cage - full of men . BOOBEY ( Som ...
... falling down the shaft . 2. ( S. ) See Bell - mould . BONNET ROLLER , BONNET PULLEY , BONNET SHEAF . See Hat Roller . BONT or BOND . The cage and winding rope with attachments . BONTLE ( M. ) . A cage - full of men . BOOBEY ( Som ...
Side 29
... falls to the bottom of the boxes or tubs . It is produced by breakage in transit underground , and by sorting on the bank ( 1 ) . BOXED OFF . Enclosed or protected by a wooden pipe or partition . BOXES ( Pa . ) . Wooden parti- tions for ...
... falls to the bottom of the boxes or tubs . It is produced by breakage in transit underground , and by sorting on the bank ( 1 ) . BOXED OFF . Enclosed or protected by a wooden pipe or partition . BOXES ( Pa . ) . Wooden parti- tions for ...
Side 45
... falling downwards . CATCHES . 1. Iron levers or props at the top and bottom of a pit shaft . See Cage Shuts . 2. Iron stops fitted on a cage to keep trams from running off . 3. Projecting blocks of wood attached to pump spears for ...
... falling downwards . CATCHES . 1. Iron levers or props at the top and bottom of a pit shaft . See Cage Shuts . 2. Iron stops fitted on a cage to keep trams from running off . 3. Projecting blocks of wood attached to pump spears for ...
Side 60
... fall of the barometer is taking place , in order that extra vigilance and care may be taken in guarding against the effects of possible sudden outbursts of fire - damp , or of unusually large quantities of that gas being given off from ...
... fall of the barometer is taking place , in order that extra vigilance and care may be taken in guarding against the effects of possible sudden outbursts of fire - damp , or of unusually large quantities of that gas being given off from ...
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.