160 Mr. William Phillips on the Veins of Cornwall. 



south veins traversing metalliferous veins is here exhibited, for the 

 load of the contre, which, as has been said, is rich in copper, not 

 only passes through the north and south vein, but also heaves it 

 out of its regular direction four fathoms. This is the only instance 

 of the kind that has come to my knowledge. On consulting the 

 ground plan of Herland and Drannack mines, it will be seen that 

 the effect of the cross vein on the contre in that mine was exactly 

 that of the contre on the cross vein in Huel Alfred. 



The run of the cross vein is direct north and south ; it underlies 

 west about one foot in a fathom ; is nine feet wide, and close to the 

 contre (where only it has been seen) is chiefly filled with quartz, 

 accompanied by blende and carbonate of lead in very small quantities, 

 but in it there is no flucan ; at and below forty fathoms from the 

 surface, the quartz assumed the form of a fine sand, and the water 

 from the cross vein was so powerful as to wash the sand 90 

 fathoms into the contre, so as occasionally to choak the pumps. 

 It should be remarked that no ore was seen in the latter while 

 passing through the cross vein for more than 100 fathoms from the 

 surface. 



About 45,000 tons of copper ore, the produce of Huel Alfred, 

 have been sold since the beginning of 1801, for the sum of about 

 =£350,000. The number of men women and children, employed 

 underground and on the surface, amounts nearly to 1500. There 

 are three large steam engines for drawing the water, and tv^ro steam 

 whims for drawing the ore, now on the mine. The monthly expenses 

 for labour, coals, ropes, timber, &c. amounts now to about £5300. 

 The profit hitherto divided amongst the adventurers amounts to 

 about ^120,000. 



