5

C.—4.

Tabulated Statement of the Parcels of Ore tested at the Thames School of Mines Experimental Plant during the last Year.

Assay Value of Ore per Ton. Treated by Wet Crushing and saved on Copper Plates. Treated by Amalgamation and Chemicals. Name of Mine and District. Quantity of Ore treated. Remarks. Value. Gold. Silver. Bullion. Fineness in Gold. Fineness in Silver. Percentage saved. Bullion. Fineness in Gold. Fineness in Silver. Percentage saved. Total percentage saved. lib. & s. d. Oz. d. g. Oz. d. g. oz. a. g. Oz. d. g. Gem, Waiomo 256 16 2 0 3 5 13 19 18 5 •1 9 13 241-4 758-6 870 87-0 A 1,045 10 3 6 2 5 9 7 6 5 0 3 18 535-8 408-7 8-0 *0 16 10 415-2 584-8 330 41-0 w # • • 910 10 4 G 2 5 9 7 16 6 I I I Both on plates and pans 0 9 18 I 161-4 838-5 9-0 90 Ore contained lead chloride. 1,165 9 19 0 2 2 20 9 4 0 Ore crushed wet and treated in pans, \ Part with chemicals Part without chemicals 1 51-7 15-5 67-0 121 16 2 0 3 5 13 19 18 5 Treated in berdan without chemicals i i i 0 5 0. 860-4 I 139-5 96 0 Caledonia, Puhipuhi Not given 5 4 0 2 19 0 298-6 571-4 71-5 1 10 0 012-2 971-5 6-5 78-0 Subjected to chloridizing, roasting with 10 per cent, salt and 3 pel cent, iron-sulphate. Crushed dry. Prospectors' „ 3,700 53 10 0 75 0 0 003-2 769-8 650 720 7 7 0 45 7 0 12 12 0 003-2 996-1 800 2,530 5 5 0 32 7 0 •36 5 0 002-5 799-5 78-5 Just-in-Time , 1,800 3 0 0 0 5 6 13 0 0 9 3 0 015-9 966-5 78-8 Crushed dry and raw amalgamation, Caledonia „ 340 2 15 G 0 12 14 1 16 7 0 0 21 8100 190-0 34-0 •0 3 20 283-5 704-3 550 890 The itei s marked thus * were tr< ated with hot amal{ ation.