. Report of the Commission Appointed to Investigate the Zinc Resources of British Columbia and the Conditions Affecting their Exploitation. no complete statisticsavailable for the years previous to 1896. The Mineral Industry reports thefollowing averages: 1889, $25; 1890, $: 1891, $; 1892, $;1893, $; 1894, $ The Mineral Industry made no quotation for1895; Prof. Erasmus Haworth, State Geologist of Kansas, gives the averagefor that year as $ In the earlier years the figures represent the valueof the average grade of ore marketed. Since 1899 they represent the aver
. Report of the Commission Appointed to Investigate the Zinc Resources of British Columbia and the Conditions Affecting their Exploitation. no complete statisticsavailable for the years previous to 1896. The Mineral Industry reports thefollowing averages: 1889, $25; 1890, $: 1891, $; 1892, $;1893, $; 1894, $ The Mineral Industry made no quotation for1895; Prof. Erasmus Haworth, State Geologist of Kansas, gives the averagefor that year as $ In the earlier years the figures represent the valueof the average grade of ore marketed. Since 1899 they represent the averagevalue of ore assaying 60% zinc. In the early part of the decade, 1891-1900, the average grade of the oreproduced in the district was probably between 56% and 58% Zn; certainlynot more than 58%. About 1900 the average was probably very close to60%, which is rated as the standard ore of the district. A good deal ofore assaying 62% to 63% Zn is produced, and occasionally lots assaying ashigh as During the last two or three years the average grade hasbeen about 58% zinc, which is representative of the present production. 10 ^4. Fig. i — Plan. Fig. 2—Vertical Picking Table.
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