450 Macfarlane on the Acton Copper Mine, 



were sloped out in the north-east side of the shaft, and yielded — 

 10|||^ tons first quality ore of 22.0 per cent. 

 4311.11 « " " " 18.4 " 

 12||_ « second " " 9.0 '< 



154 " crush " 4.06 " 



These quantities, after deducting loss in dressing, correspond to 

 119i||_ tons of 12 per cent ore, or 2.62 tons per cubic fathom. 

 The total expenses of excavation and bringing to surface, amounted 

 to $574.10 ; equal to $12.59 per cubic fathom, and to |4.80 per 

 ton of 12 per cent ore. The average thickness of the bed was here 

 19^ feet, = 3i fathoms. Consequently one square fathom of the 

 bed yielded 8.51 tons of 12 per cent ore, at an expense of $40.92. 

 During the following months of August and September the stoping 

 was continued, accompanied by drifting under the old road lead- 

 ino- into Flowers's pit (see map). Here were excavated 63.37 cubic 

 fathoms of ground, which yielded — 



49147 lbs. first quality ore of 21.2 per cent. 



These quantities, after deducting one-fourth of the copper contents 

 of the crush ore, correspond to 95|||y tons of 12 per cent ore, 

 or 1.5 tons per cubic fathom. The total expense of mining and 

 raising this quantity was $873 ; equal to $13.77 per cuHc fathom, 

 or to $9.19 per ton of ore. The average thickness of the bed 

 was at this place 2^ fathoms. Consequently a square fathom 

 of the bed yielded 3.75 tons of 12 per cent ore, at an expense of 



$34.32. 



As regards the north-east extremity of Flowers's pit, a shaft 

 had been sunk in the limestone there previous to September, 

 1861, to a depth of twenty feet on the incline, below the bottom 

 of the open working, and forty-four feet below the floor, on the 

 present collar of the shaft, now called No. 5. At the bottom, a 

 considerable quantity of copper pyrites was observable, partly in 

 veins permeating the limestone, and partly impregnating the same. 

 In order to the examination of the ground here it was resolved 



