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  1. 1
    2 digital object(s)
    Library / Indian Affairs Annual Reports, 1864 to 1990
    Item ID number:
    40156
    Year:
    1990
    ... prices reduced the value of gold production. Firm zinc prices allowed the base metal sector to do well. Eight mining plants operated and six mines produced 
  2. 2
    2 digital object(s)
    Library / Indian Affairs Annual Reports, 1864 to 1990
    Item ID number:
    40456
    Year:
    1991
    ... prices and equitable production; revenue and production forecasting and revenue collection and verification. In 1990 - 91, 21 wells were drilled on Indian 
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