Soft coal cube has hardly been scratched] The record of these long-ago events is found when we sink a shaft through typical coal-bearing strata.
Where a shaft passes through water-bearing strata it must be provided with a tight lining, or “tubbing,” to prevent the mine from being flooded.
Section of coal-bearing strata in Pennsylvania, showing relative amount of coal and barren rock in a rich field] In the popular mind coal is classified as hard or soft, while hard coal is further classified according to the size of the lumps.
Where foundations have to be carried down to a considerable depth in water-bearing strata, or through the alluvial bed of a river, to reach a hard stratum, bottomless caissons sunk by excavating under compressed air are employed.
A caisson in this sense implies a case or enclosure of wood or iron, generally employed for keeping out water during the execution of foundations and other works in water-bearing strata, at the side of or under rivers, and also [v.
The foundations of the two piers of the Eiffel Tower adjoining the Seine were carried down through soft water-bearing strata to a depth of 33 ft.
The disturbances which may affect the water-bearing strata, and break their continuous character, as by this the subterranean flow of water would be impeded or prevented.
The introduction of these special methods has considerably simplified the problem of sinking through water-bearing strata.
The third method of sinking through water-bearing strata is that of boring, adopted by Messrs Kind & Chaudron in Belgium and Germany.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "bearing strata" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
