etc 50 exactly foreseen. Besides, it secures a vertical sinking of the strata, since the congelation converts the earth $12.50 of the shaft, since the operation is performed in solid into a perfectly homogeneous mass. It might in cer- Results—10,000 bushels at a cost of one-quarter of one cent per… … FBEEZING. a wire, which can be attached LUNEENHEIMER'S AUTOMATIC LOOSE PULLEY OILEB The sinking of mine shafts to the ceiling or wherever con- by freezing was first practiced venient. On wide pulleys a slot by Mr. Poetsch at the Archibald Mine. The or groove should extend through the entire length…
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