Convention, Volume 2;Volume 37;Volume 50 |
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Halaman 81
... Coal is delivered by boat to the Harlem River side of the building and is hoisted 184 ft by 1.5 ton grab buckets to the top of a steel coal tower , where it is dumped into hoppers and passed through crushers . From the crusher the coal ...
... Coal is delivered by boat to the Harlem River side of the building and is hoisted 184 ft by 1.5 ton grab buckets to the top of a steel coal tower , where it is dumped into hoppers and passed through crushers . From the crusher the coal ...
Halaman 91
... coal when its contents are heaped above the water line . The construction methods employed in ex- cavating the pit were unique and perhaps even more interesting than the project itself . At the site of the present pit a mound of clay ...
... coal when its contents are heaped above the water line . The construction methods employed in ex- cavating the pit were unique and perhaps even more interesting than the project itself . At the site of the present pit a mound of clay ...
Halaman 140
... COAL MINING Electric coal mining is a department in which several mem- ber companies are actively engaged , as noted in previous reports . Mines of all kinds are large users of energy , but it is not yet fully realized that supply from ...
... COAL MINING Electric coal mining is a department in which several mem- ber companies are actively engaged , as noted in previous reports . Mines of all kinds are large users of energy , but it is not yet fully realized that supply from ...
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