 | 1839 - 938 Seiten
...pieces of the latter being found in clay beds, intermixed with the rock, and a vein of iron stone four inches thick at the surface of the rock, and dipping towards the south, has been opened. The author then proceeds to describe the general method of making cement in that neighbourhood, and... | |
 | 1839 - 496 Seiten
...pieces of the latter being found in clay beds, intermixed with the rock, and a vein of ironstone four inches thick at the surface of the rock, and dipping towards the south, has been opened. The author then proceeds to describe the general method of making cement in that neighbourhood, and... | |
 | 1839 - 464 Seiten
...pieces of the latter being found in clay beds, intermixed with the rock, and a vein ot iron stone four inches thick at the surface of the rock, and dipping towards the south, has been opened. The author then proceeds to describe the general method of making cement in that neighbourhood, and... | |
 | William Newton, Charles Frederick Partington - 1839 - 478 Seiten
...pieces of the latter being found in clay beds, intermixed with the rock, and a vein of ironstone four inches thick at the surface of the rock, and dipping towards the south, has been opened. The author then proceeds to describe the general method of making cement in that neighbourhood, and... | |
 | William Newton - 1839 - 468 Seiten
...pieces of the latter being found in clay beds, intermixed with the rock, and a vein of ironstone four inches thick at the surface of the rock, and dipping towards the south, has been opened. The author then proceeds to describe the general method of making cement in that neighbourhood, and... | |
 | 1839 - 732 Seiten
...latter being found in ck;. beds, intermixed with the rock, and a vein of iron-stone four inches thici ^ the surface of the rock, and dipping towards the south, has been opened. The security, certainty, and convenience of this plan are evident 1: quarries, any number of charges... | |
 | Institution of Civil Engineers (Great Britain) - 1848 - 570 Seiten
...pieces of the latter being found in clay beds, intermixed with the rock, and a vein of ironstone four inches thick at the surface of the rock, and dipping towards the south, has been opened. Cament. The author then proceeds to describe the general method of making cement in that neighbourhood,... | |
| |
About 13 cubic feet weigh a ton ; the limestone is of alight blue or grey colour, in general free from metallic veins, but with some indications of manganese and ironstone, round pieces of the latter being found in clay beds, intermixed with the rock,... 