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TABLE 6-Continued
NONFUEL MINERAL PRODUCTION' IN TIE UNITED STATES, BY STATE
1991                        1992                         1993
Mineral                                    Quantity       Value        Quniy
         Value        Quniy           Value
(thousands)    Quantity     (thousands)     Qaty         (thousands)
UNDISTRIBUTED
Delaware, Hawaii (1991-92), Mississippi (1993), New
Hampsire (1991-92), North Dakota (1991), Rhode Island,
Vermont, Wisconsin (1991-92), and Undistributed (1991)                  
XX        '$77,972           XX       r$94,923           XX        $102,530
eEstimated. 'Revised. NA Not available. W Withheld to avoid disclosing company
proprietary data, value included with 'Combined value' data. XX Not applicable.
'Production as measured by mine shipments, sales, or marketable production
(including consumption by producers).
2Excludes certain clays; kind and value included with 'Combined value' data.
'Excludes certain stones; kind and value included with 'Combined value' data.
4Recoverable content of ores, etc.
'Grindstones, pulpstones, and sharpening stones; excludes mill liners and
grinding pebbles.
'Le than 1/2 unit.
'Calcium chloride (natural) canvassing discontinued beginning 1993.
'Partial total, excludes values that must be concealed to avoid disclosing
company proprietary data. Values excluded from partial total included with
'Undistributed States.'
'Value excluded to avoid disclosing company proprietary data.
'Excludes salt in brines; value included with 'Combined value' data.
&quot;The Riddle nickel smelter uses lateritic ore mined on Nickel Mountain,
lateritic ore imported from New Caledonia, and small tonnages of recycled
Ni-bearing catalysts. In 1989,
the Glenbrook Nickel Co. purchased the idled mining and smelting complex
and restarted the operation. Production of ferronickel on a contained Ni
basis has been as follows:
1991-7,060metric tons (mt) valued at $57.6 million; 1992-8,962 mt valued
at $62.7 million; and 1993-4,878 mt valued at $28.0 million.
ilAplite combined with feldspar beginning 1992.


TABLE 7
NONFUEL MINERAL PRODUCTION1 IN TIE COMMONWEALTH OF PUERTO RICO AND ISLANDS
ADMINISTERED BY THE UNITED STATES


1991                        1992                      1993
Mineral                   ~~~~Quantity      Value        Quntt         Value
       Quntity       Value
(thousand)     Quantity    (thousands)    Qua         (thousands)
PUERTO RICO
Cement (portland)                   thousand metric tons     *1,254     
 *$110,560        1,298      $119,643        1,310       $72,619
Clays                                              do.          145     
       355           W           527          155            508
Lime                                               do.           27     
     4,440           27         3,717           -             -
Sand and gravel (industrial)                       do.           50     
       825           W             W           58          1,396
Stone:
Crushed                                         do.       %8,008        
 49,839         NA            NA         7,845         51,059
Dimension                                metric tons                  - 
           -                    -           W              W
Total                                                    XX           166,019
        XX        2123,887         XX        2125,582
ADMINISTERED ISLANDS
American Samoa: Stone (crushed)     thousand metric tons         W      
        W            -             -           83             W
Guam: Stone (crushed)                              do.           W      
    18,038           -             -         1,373        15,095
Virgin Island: Stone (crushed)                     do.           -      
        -            -             -           W              W
Total                                                        XX         r18,038
          XX             -          XX         215,095
'Estimated. NA Not available. W Withheld to avoid disclosing company proprietary
data; not included in 'Total. XX Not applicable.
'Production as measured by mine shipments, sales, or marketable production
(including consumption by producers).
'Total does not include value of item withheld.


SURVEY METHODS STATISTICAL SUMMARY OF NONFUEL MINERALS-1993


27


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