Box 64
Contains 21 Results:
Miscellaneous Patents (folder 1), 1966-1970
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Miscellaneous Patents (folder 2), 1971-1976
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Process for Recovery Metals from Zinc Plant Residue, 1967-1970
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Liquid Ion Exchange Process for Metal Recovery, 1967-1975
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Selective Precipitation of Elements Using Monovalent Ions, 1967
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Continuous Process for Purification of Leach Zinc Calcine Filtrate Solution, 1967-1974
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Carrier Conveyor Transfer Mechanism, 1967-1969
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Continuous Process for Leaching of Zinc Calcines, 1967-1976
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Process for Preventing Agglomeration of Cadmium in Solution, 1968-1973
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.
Rapping Device During Hydraulic Shipping Operation, 1968-1970
The records of Bunker Hill/Pintlar span the years 1887 to 1996, with the bulk of the material covering the years 1968 to 1996.
Included in the collection are administrative records, correspondence, Superfund work plans and proposals, media coverage, litigation documents, financial records, personnel information and stockholder records.