VI. MINING AND MILLING 



1650. ANONYMOUS. The losses in dressing Cornish tin ores. 



Eng. Mg. Journ., Vol. 55, 1893, New York, p. 295. 



Brief description of improved methods and results gained. 



. See No. 312. 



1651. CARCANAGUES, . Memoire sur la preparation mecanique du mineral 



d'etain dans le Cornwall. 



Ann. Mines, ser. 7, Vol. 14, 1878, Paris, pp. 209-239. 



CHABLETON, ARTHUR G. See No. 1310. 



1652. COLLINS, J. H. On the use of the impact screen in tin dressing. 



Trans. Inst. Mg. Met., Vol. 15, 1905-1906, London, pp. 524-525. 

 Mg. Journ. Railw. Comm. Gaz., Vol. 79, 1906, London, p. 511. 



The author reports that the impact screen is for the first time, as far as is known, 

 being used for tin dressing at Wheal Kitty mine, and with very satisfactory results. 



1653. COMMANS, ROBERT E. The concentration and sizing of crushed minerals. 



Proc. Inst. Civ. Eng., Vol. 116, 1894, London, pp. 3-66. Discussion and corre- 

 spondence pp. 67-113, figs. 50. 



An account of methods and apparatus used in treatment of ores including tin ores, 

 to render them marketable. 



FAWNS, SYDNEY. See No. 1320. 



1654. FERGUSON, HENRY T. On the mechanical appliances used for dressing 



tin and copper ores in Cornwall. 



Proc. Inst. Mech. Eng., 1873, London, pp. 119-137. 

 Discussion, pp. 137-152. 



Treated under the heads: Tin dressing, stamping, buddling, calcining, treatment of 

 slimes, pulverizing. 



1655. FRECHEVILLE, R. J. The results obtained by the Cornish system of 



dressing tin ore, with observations thereon. 



Trans. Mg. Ass. Inst. Cornwall, Vol. 1, 1887, Camborne, pp. 93-104. 

 Reprint: Eng. Mg. Journ., Vol. 40, 1885, New York, pp. 416-417. 

 A paper discussing the amount of tin saved at the mines, the amount caught by 

 the stream works, and amount finally lost. 



1656. KENWOOD, W. J. On the manipulation to which the ores of tin and 



copper are subjected in the central mining district of Cornwall. 



Trans. Roy. Geol. Soc. Cornwall, Vol. 4, 1838, Penzance, pp. 145-165. 



Description of stamps, buddies, kieves, etc., used. Also roasting furnace and jigs. 



1657. HICKS, JAMES. Treatment of slime tin. 



Trans. Mg. Ass. Inst. Cornwall, Vol. 4, 1893-1895, Camborne, pp. 111-123. 



Discussion, pp. 123-137, figs. 4. Read December 20, 1892. 



" The increasing importance of the careful treatment of slime tin arises from the 

 fact that as our mines increase in depth the tin in the stone becomes finer in grain." 



Mentions the fact that ore is being crushed finer than formerly, and discusses the 

 loss of slimes in the Red River and the recovery by streamers. 



234 



