C—3

8

The following were treated by the cyanide process, and the tailings subsequently treated by pan-amalgamation so as to recover the value left in them:—

Tabulated Statement showing Parcels of Ore treated at Thames School of Mines Experimental Plant during 1896-97— continued.

Name of Mine and District. Description of Ore. Weight of Ore. Assay-value of Ore per Ton. Gold. Silver. Value. So Bullion saved. Value pe Ounce. lei Percentage saved. Gold. Silver. Value. Maratoto ... Lb. ... | Grey quartz, with blue veins ... 400 Oz. dwt. gr. i Oz. dwt. gr. i £ s. d. 3 15 15 | 87 14 7 \ 22 16 0 Dry Oz. dwt. gr. £ s. d. j By cyanide Extra, by pan 12 8 8 0 12 12 P 2 3 3 4 84-1 44-8 49-8 62-0 1-7 50-6 33-3 Total extraction per cent. - I 94-6 63-7 83-9 E. E. McGregor, Thames ... | Hard glassy crystalline quartz ... | 1,200 1 17 19 35 18 8 | 10 14 0 | Dry By cyanide Extra, by pan 7 12 12 3 7 22 0 0 6 8 2 4 46-4 28-5 30-8 15-7 41-8 26-7 Total extraction per cent. I ... 74-9 46-5 68-5

Name of Mine and District. Description of Ore. Weight of — Ore. Assi Gold. Assay-value of Ore per Ton. say r-val ,lue of Ore Silver. per 1 Ton. Value. ■O.S So Bullion saved. Pe Value per i Ounce. Gold. Percentage saved. ercentage saved. Silver. Value. By Cyanide Peoi IESS. Lb. Oz. dwt. gr. A. Kummert, Whangamata ... | Hard rusty-coloured quartz ... ' 600 0 16 9 Waihi Dredging ... ... : Tailings containing roots ... ' 3,640 0 7 13 Young New-Zealander, Waitekauri Densely mineralised ... ... 1,220 1 10 6 Waiorongomai No. 2 ... ... White glassy quartz ... ... 1,950 0 5 1 Waiorongomai No. 4 ... ... White glassy quartz . ... 1,800 0 2 0 Sapphire, Mercury Bay... ... Hard grey quartz ... ... 600 0 0 10 Eangatira, Thames ... ... Mullocky clayey ore ... ... 560 049 Captain Farquhar, Whangaruru ... Brittle brownish country ... 1,000 016 Temple Bar, Thames ... ... Light-brown and grey- ... 900 0121 Phoenix, Whangamata ... ... Splintery grey quartz, with wavy 1,100 1 12 8 blue lines Oz. dwt. gr. 0 16 9 1 7 13 2 14 4 0 7 13 0 15 15 0 7 13 0 6 7 0 16 0 3 18 11 13 2 £ s. d. 3 6 10 1 12 7 6 5 9 1 0 10 0 9 4 0 2 4 0 18 0 0 5 1 0 7 10 7 9 8 Dry Dry II II II II " i Oz. dwt. gr. £ s. d. 0 11 16 1 5 8 2 9 20 10 19 1 10 5 12 4 0 7 0 1 13 5 1 0 0 |0 5 2 3 14 9 0 8 Hi 84-5 93-5 33-1 64-3 70-0 900 57-1 73-1 85-3 44-4 77-0 45-8 31-2 62-1 68-6 67-2 40-4 83-2 75-6 46-9 84-0 90-0 33-0 64-1 70-0 82-1 56-6 73-7 85-0 44-8 ! I