. Transactions . N?3. UTTON SEAM Scale, 160 Feet to 1 lack ceeduigv N°,fEIof ME .1853-4) 105 It was intended to introduce wire rope guides into the upcast shaft,and with that object in view the working- of the pit was discontinuedfor a short time, during which all the underground boiler fires wereextinguished, and the two ventilating- furnaces fires reduced to aboutone-half of their ordinary size, so as to admit of workmen remaining inthe upcast shaft while stripping it of the old guides and buntons. During the progress of these operations, and while a cradle, R, was inthat part of the upcast
. Transactions . N?3. UTTON SEAM Scale, 160 Feet to 1 lack ceeduigv N°,fEIof ME .1853-4) 105 It was intended to introduce wire rope guides into the upcast shaft,and with that object in view the working- of the pit was discontinuedfor a short time, during which all the underground boiler fires wereextinguished, and the two ventilating- furnaces fires reduced to aboutone-half of their ordinary size, so as to admit of workmen remaining inthe upcast shaft while stripping it of the old guides and buntons. During the progress of these operations, and while a cradle, R, was inthat part of the upcast shaft where it is reduced to 8| feet in diameter,at some distance above where the air which ventilated the Five-quarterseam entered that shaft, it was found that in lieu of a current of airleaving the downcast shaft at the Five-quarter seam, passing throughthe workings in that seam, and entering the upcast shaft, and accom-panying the upcast current to the surface, as usual, a current of smokeand hot air left the upc
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Keywords: ., bookcentury1800, booksubjectmechan, booksubjectmineralindustries
