| Description | This bundle contains letters, memoranda, calcualtions etc. about various individial Cornish mines and their engines. The original arrangement of this bundle is not clear, but at some point the contents have been arranged alphabetically by mine. The contents of this bundle were almost certainly gathered together from various other sources, but it is not clear when this happened.
The papers concern the ordering, erection and performance of engines, mine shares, debts owed to Boulton & Watt, disputes over payment, etc. A large number of the papers relate to the legal actions against the “recusant” mines in the late 1790s, and Matthew Robinson Boulton’s visit to Cornwall in 1799 to settle with various mines. For further material relating to the recusant mines, see B&W 2/56, Legal Papers, Cornish Recusants.
Nos. 1-2. Carzize Wood.
Nos. 3-5. Chacewater.
Nos. 6-46. Consolidated Mines (Elvan, Wheal Maid, Wheal Virgin).
Nos. 47-53. Dolcoath.
Nos. 54-61. Godolphin.
Nos. 62-73. Hallamanin.
No. 74. Herland.
No. 75. Hewas.
Nos. 76-84. North Downs.
Nos. 85-118. Poldice.
The performance of two atmopsheric engines at Poldice, one with a 66 inch cylinder pumping water from 33 fathoms and one with a 60 inch cylinder pumping from 25 fathoms, was used as a standard on which calculations of the coal consumption of engines were founded. These engines were referred to as the “Eastern engines.” The tests to establish this standard performance were made in August and September 1778.
Nos. 119-123. Polgooth.
Nos. 124-126. Pool Adit Mine.
No. 127. Rosewarne.
Nos. 128-129. Seal Hole.
Nos. 130-131. Tincroft.
Nos. 132-133. Ting Tang.
Nos. 134-139. Trevaskus.
Nos. 140-184. United Mines (Ale & Cakes, Poldory).
Nos. 185-191. Wheal Abraham.
No. 192. Wheal Butson.
Nos. 193-202. Wheal Chance
Nos. 203-210. Wheal Crenver.
Nos. 211-213. Wheal Gons.
No. 214. Wheal Mount.
Nos. 215-26. Wheal Prosper.
No. 217. Wheal Rose.
Nos. 218-224. Wheal Treasury.
Nos. 225-227. Wheal Union. |