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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الصفحة
... adventurers and Out - adventurers - Of Captains and other fuperintendants - Observations , 174. of the furgeon of a Mine , 175. Obfervations , 176. Propofals for a county hospital , 177. Of working the Lode by double pick - men , 178 ...
... adventurers and Out - adventurers - Of Captains and other fuperintendants - Observations , 174. of the furgeon of a Mine , 175. Obfervations , 176. Propofals for a county hospital , 177. Of working the Lode by double pick - men , 178 ...
الصفحة viii
... adventurers with very ample gain . It should , therefore , seem eligible to bestow our attention on those skin - deep adventures , preferably to the deep Mines ; but this is by no means the cafe in practical Mining : for , if a Mine ...
... adventurers with very ample gain . It should , therefore , seem eligible to bestow our attention on those skin - deep adventures , preferably to the deep Mines ; but this is by no means the cafe in practical Mining : for , if a Mine ...
الصفحة xii
... adventurers in general ; and that in Tin particularly , the credits are unequal to the out- goings . Nevertheless , we fee , in our county , that many men . have made opulent fortunes by their fuccefs in Mining ; there- fore it is ...
... adventurers in general ; and that in Tin particularly , the credits are unequal to the out- goings . Nevertheless , we fee , in our county , that many men . have made opulent fortunes by their fuccefs in Mining ; there- fore it is ...
الصفحة xiii
... Adventurers in Cornwall . Suppofing the proceeds in Tin and Copper to be annually four hundred thousand pounds , and the feparate gain being aggregate ; upon a dividend of twelve and a half cent . it will come out fifty thoufand pounds ...
... Adventurers in Cornwall . Suppofing the proceeds in Tin and Copper to be annually four hundred thousand pounds , and the feparate gain being aggregate ; upon a dividend of twelve and a half cent . it will come out fifty thoufand pounds ...
الصفحة xiv
... Adventurers to rework feveral deep expenfive Mines , now dormant through the great preffure of weighty impofts , upon the back of many natural difficulties and obftructions . The drawback upon coal used in our smelting - houses and fire ...
... Adventurers to rework feveral deep expenfive Mines , now dormant through the great preffure of weighty impofts , upon the back of many natural difficulties and obftructions . The drawback upon coal used in our smelting - houses and fire ...
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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