 | Faujas-de-St.-Fond (cit., Barthélemy) - 1799 - 382 Seiten
...fires, and eafily tranfported j transported ; which makes this kind of coal fell at a higher price. When the bed of black and bituminous clay is penetrated,...found adhering to it ; but this is not always the cafe, for there are other mines in the neighbourhood where freeftone is the covering, which in the... | |
 | Faujas-de-St.-Fond (cit., Barthélemy) - 1799 - 388 Seiten
...proper for chamber-fires, and eafily transported ; which makes this kind of coal fell at a higher price. When the bed of black and bituminous clay is. penetrated,...found adhering to it ; but this is not always the cafe, for there are other mines in the neighbourhood where freeftone is the covering, which in the... | |
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This last circumstance is of considerable advantage, as such pieces are always easily transported, and are besides well suited for chamberfires ; which makes this kind of coal sell at a higher price. When the bed of black and bituminous clay is penetrated,... 