Sinking Shafts by Freezing.
An ingenious mode of sinking shafts m quicksand or other shitting ground has been devised by Her* Poeiseh, and is being introduced into this country. It consists m freezing the soft ground hard by a freezing mixture, and then excavating it m the ordinary way. The refrigerator is of the ammonia type by preference, but any sort will do; and the temperature employed is about 15 deg. below zera Fahrenheit. When the quicksort is frozen hard tko excavation is carried on m the usual manner, and a masonry or iron-tube lining ig given to the shaft-hole.
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https://paperspast.natlib.govt.nz/newspapers/MS18841206.2.29.8
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Manawatu Standard, Volume IX, Issue 7, 6 December 1884, Page 1 (Supplement)
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100Sinking Shafts by Freezing. Manawatu Standard, Volume IX, Issue 7, 6 December 1884, Page 1 (Supplement)
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