Mineralogia Cornubiensis: A Treatise on Minerals, Mines, and Mining: Containing the Theory and Natural History of Strata, Fissures, and Lodes, with the Methods of Discovering and Working of Tin, Copper, and Lead Mines, and of Cleansing and Metalizing Their Products; Shewing Each Particular Process for Dressing, Assaying and Smelting of Ores. To which is Added, an Explanation of the Terms and Idioms of MinersD. Bradford Barton Limited, 1778 - 331 من الصفحات |
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النتائج 1-5 من 54
الصفحة
... Adit and Adit Shafts - Of fallering the Adit for air , 146 , 147. Great differ- ence in the charge of driving Adits , 148. Of Adits as seeking Adventures , 149. Of drawing the water by the hand pump ; Whym and barrels ; defcription of ...
... Adit and Adit Shafts - Of fallering the Adit for air , 146 , 147. Great differ- ence in the charge of driving Adits , 148. Of Adits as seeking Adventures , 149. Of drawing the water by the hand pump ; Whym and barrels ; defcription of ...
الصفحة
... 202 , 203. Dialling for a Shaft on the Adit - end , 204 . Ditto for an underlying Shaft and various parts of a Mine , 205 Of Levelling , what , how useful , & c . 213 . to 212 . BOOK BOOK IV . CHAP . I. The Method of Sampling CONTENTS .
... 202 , 203. Dialling for a Shaft on the Adit - end , 204 . Ditto for an underlying Shaft and various parts of a Mine , 205 Of Levelling , what , how useful , & c . 213 . to 212 . BOOK BOOK IV . CHAP . I. The Method of Sampling CONTENTS .
الصفحة iv
... adit to unwater the workings , is not to be feen in all the islands . If , in those days , the Metal was produced from stream or fhode ftones only , we must undoubtedly have difcovered , in latter times , those Lodes or veins from ...
... adit to unwater the workings , is not to be feen in all the islands . If , in those days , the Metal was produced from stream or fhode ftones only , we must undoubtedly have difcovered , in latter times , those Lodes or veins from ...
الصفحة 11
... adit , immediately where it discharges from those Mines which are not working ; and have run half a mile or more over a bed of Copper , Mundick , and every other congeries of mineral poifons . This is a fact fo notorious , that I can ...
... adit , immediately where it discharges from those Mines which are not working ; and have run half a mile or more over a bed of Copper , Mundick , and every other congeries of mineral poifons . This is a fact fo notorious , that I can ...
الصفحة 16
... adit or tye lift of pumps , by which the burthen is eafed for the engine , and the bottoms are freed from fo much Water . The deepest of our Mines are not much affected by the influx of Top Water , before the depth of winter ; as it ...
... adit or tye lift of pumps , by which the burthen is eafed for the engine , and the bottoms are freed from fo much Water . The deepest of our Mines are not much affected by the influx of Top Water , before the depth of winter ; as it ...
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عبارات ومصطلحات مألوفة
Adit adventurers affay alfo almoſt alſo anſwer Antimony Aqua Fortis becauſe beſt black Tin bottom buddle cafe calcination called caufe cauſe colour confequence confiderable Copper Cornwall courſe Cryſtal depth diffolved diſcovered diſcovery diſtance dreffing earth eaſily expence facks faid falts fame fathoms feet feldom feparated feven feveral fhall fhillings fhould fhovel fide Fiffures fink fire firft firſt fituation fize fmall folid fome fometimes foon fouth fteam ftrata ftratum fubject fuch fufficient funk fuppofe furface Goffan Gold ground hundred inches inftance Iron itſelf laft lefs leſs likewife Lode meaſure Metal metallick Mineral Mines moft moſt muft Mundick muſt neceffary obferved occafion particles perfons petrifactive pounds prefent purpoſe quantity raiſed reaſon Redruth refpect rich Semi-metals ſeparate Shaft ſhall Shode Silver ſmall ſome ſtate Stones thefe themſelves theſe thofe thoſe thouſand Tin-ftuff Tinners tons underlie uſed vein waſhed weft white Tin Whym