head grade definition

head grade means the quantity of valuable mineral or metal contained in each tonne of ore delivered to the concentrator.
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head grade means the grade of the ore as delivered to the metallurgical plant;
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head grade means the Reported Mineral Processing Facility Feed silver grade for each calendar month as determined by the metallurgical balance for the Mineral Processing Facility (see, “Plant Metallurgical Balance” below).
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More Definitions of head grade

head grade means the grade of ore coming into a processing plant;
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Related to head grade

  • Finished grade means the grade upon completion of the fill or excavation.

  • Passing grade means work of such character that credit would be entered on the records were the semester to close at that time.

  • Pay grade means the monthly salary applicable to class titles of service personnel;

  • Established Grade means that grade established by the City for the particular area in which a sidewalk is to be constructed.

  • Highest Rating Category means, with respect to a Permitted Investment, that the Permitted Investment is rated by S&P or Moody’s in the highest rating category given by that rating agency for that general category of security. By way of example, the Highest Rating Category for tax exempt municipal debt established by S&P is “A 1+” for debt with a term of one year or less and “AAA” for a term greater than one year, with corresponding ratings by Moody’s of “MIG 1” (for fixed rate) or “VMIG 1” (for variable rate) for three months or less and “Aaa” for greater than three months. If at any time (i) both S&P and Moody’s rate a Permitted Investment and (ii) one of those ratings is below the Highest Rating Category, then such Permitted Investment will, nevertheless, be deemed to be rated in the Highest Rating Category if the lower rating is no more than one rating category below the highest rating category of that rating agency. For example, a Permitted Investment rated “AAA” by S&P and “Aa3” by Moody’s is rated in the Highest Rating Category. If, however, the lower rating is more than one full rating category below the Highest Rating Category of that Rating Agency, then the Permitted Investment will be deemed to be rated below the Highest Rating Category. For example, a Permitted Investment rated “AAA” by S&P and “A1” by Moody’s is not rated in the Highest Rating Category.