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Cominco American, Inc., Douglas Mine and Concentrator Records, 1957-1976

Overview of the Collection

Creator
Cominco American, Inc.
Title
Cominco American, Inc., Douglas Mine and Concentrator Records
Dates
1957-1976 (inclusive)
Quantity
13.0 linear feet
Collection Number
Mss 614
Summary
The Douglas Mine and Concentrator operated in Granite County, Montana from 1964-1968 under the ownership of the Montana Phosphate Products Company and later Cominco American, Inc. The records contain material related to the development, operation and dismantling of the mine and concentrator, as well as several maps and engineering drawings illustrating the Douglas Operation and other nearby mines owned by these same companies.
Repository
University of Montana, Mansfield Library, Archives and Special Collections
Archives and Special Collections
Maureen and Mike Mansfield Library
University of Montana
32 Campus Dr. #9936
59812-9936
Missoula, MT
Telephone: 406-243-2053
Fax: 406-243-4067
library.archives@umontana.edu
Access Restrictions

Researchers must use collection in accordance with the policies of Archives and Special Collections, the Maureen and Mike Mansfield Library, and The University of Montana--Missoula.

Languages
English
Sponsor
Funding for creating this finding aid was provided through a grant awarded by the National Historic Publications and Records Commission. Funding for encoding this finding aid was provided through a grant awarded by the National Endowment for the Humanities.


Historical NoteReturn to Top

In 1962 the Montana Phosphate Products Company, based in Garrison, Montana, began a significant phosphate mining and milling project in the Maxville Mining District of Granite County, Montana. In addition to the potential profit for the company, it was hoped that the exploitation of area phosphate deposits would boost the region’s economy. The Douglas Mine and Concentrator located nine miles south of Drummond, Montana on Douglas Creek were a major part of this development. Montana Phosphate Products Company began underground mining at this location in 1962. By 1964 the mine employed approximately 110 workers and was steadily producing phosphate rock.

The advent of phosphate mining in Granite County during the early 1960s perked the interest of other significant firms, particularly Cominco American, Inc., the American branch of a large Canadian mining and smelting corporation. Cominco had been mining in adjacent Powell County, Montana for years, sometimes in partnership with Montana Phosphate Products Company, and saw the expanding Douglas Operation as a natural addition to its holdings. In 1965, Cominco American, Inc. gained control of the Douglas Mine and continued to expand operations at that location. The Douglas Concentrator began milling phosphate rock in 1965, and Cominco started one of Montana’s few open pit phosphate mines on their Douglas Creek site in 1967. During these years of steady expansion, production peaked and the operation employed nearly 160 men and women.

Despite promising production and heavy investment by both Montana Phosphate Products Company and Cominco American, Inc., the operation was closed down in 1968. In 1972, Cominco American, Inc. hired the Bechtel Corporation to dismantle the Douglas Concentrator and send all salvageable equipment to Greenland for use in a mine operated by Greenex, a subsidiary of Cominco. Sections of the mine and tailings at the Douglas site have since been reclaimed by the Montana Waste Cleanup Bureau, while other portions remain on the Montana DEQ shortlist, and may require further reclamation.

Content DescriptionReturn to Top

This collection contains materials related to the development, operation and dismantling of the Douglas Mine and Concentrator, located in Granite County, Montana, by the Montana Phosphate Products Company and Cominco American, Inc. during the 1960s and early 1970s. The records offers insight into mining philosophies and trends of that time, as well as providing information on the day-to-day operations of a phosphate mine and milling operation in Western Montana.

Series I, Mine and Concentrator Development, contains materials related to the development of the Douglas Operation by the Montana Phosphate Products Company, and later Cominco American, Inc., beginning in 1962 and extending into mid-1960s. Included are cost quotations and advertisements for various mining and milling equipment, engineering drawings, construction specifications, cost projections and other materials. This series gives an overview of state-of-the-art phosphate mining technologies in the 1960s, as well as the amount of financial investment and work necessary to undertake such a mining project.

Series II, Mine and Concentrator Operations, contains daily and monthly reports, maintenance schedules, studies, correspondence, financial calculations, and other miscellaneous materials created by the Montana Phosphate Products Company and Cominco Amerincan, Inc. during the operation of the Douglas Mine and Concentrator from 1962-1968. This material provides a look into the day-to-day operations of a phosphate mine and concentrator operating in Western Montana during the 1960s.

Series III, Concentrator Dismantling, contains correspondence and daily reports, as well as other miscellaneous material related to the dismantling of the Douglas Concentrator in 1972. This action was authorized by Cominco American, Inc. and carried out by the Bechtel Corporation. The series is representative of how Cominco American, Inc. was able to salvage much of the equipment at its Douglas Creek location for use in another mining project in Greenland.

Series IV, Maps and Drawings, contains numerous oversized maps and drawings depicting the Douglas Operation and other Montana Phosphate Products Company and Cominco American, Inc. mines in the region, including the Anderson (Warm Springs), Brock, Luke, and Relyea Mines. The materials range in subject from underground mines to dam cross-sections to construction specifications.

Use of the CollectionReturn to Top

Restrictions on Use

Researchers are responsible for using in accordance with 17 U.S.C. and any other applicable statutes. Copyright not transferred to The University of Montana. Copyrigth status unknown.

Preferred Citation

[Name of document or photograph number], Cominco American, Inc., Douglas Mine and Concentrator Records, Archives and Special Collections, Maureen and Mike Mansfield Library, The University of Montana--Missoula.

Administrative InformationReturn to Top


Detailed Description of the CollectionReturn to Top

Series I:  Mine and Concentrator Development, 1962-1966 Return to Top

Container(s) Description Dates
Box/Folder
1/1
Grinding, Electric Motor
1962
1/2
Grinding, Flotation Machines
1962-1965
1/3
Filtering, Thickeners
1962
1/4
Filtering, Thickeners, EIMCO Corporation
1962-1966
1/5
Filtering, Albany Felt Company
1964-1965
1/6
Filtering, AMETEK Filtration Fabrics
1963-1964
1/7
Drying
1962-1965
1/8
Drying, Dorrco Fluosolids Drying System, Dorr-Oliver, Inc.,
1963
1/9
Drying, Dryers, Dorr-Oliver Inc.
1962-1965
1/10
Drying, Dryers, Refractory and Insulation
1963 and undated
1/11
Drying, Dust Collecting
1964-1965
1/12
Loading, General
1962-1964
1/13
Loading, Air Slides and Loading Chutes
1963
1/14
Loading, Bucket Elevators
1963
1/15
Loading, Car Movers
1963
2/1
Loading, Car Movers, Northern Pacific Railway
1962-1963
2/2
Loading, Elevators, Link Belt Company
1963-1965
2/3
Loading, Weightometer Conveyors
1962
2/4
Loading, Weightometer Conveyors, Fuller Company
1962-1963
2/5
Loading, Weightometer Conveyors, Sutorbuilt Corporation
1963
2/6
Tailings, Disposal
1962-1964
2/7
Tailings, Thickener, EIMCO Corporation
1963-1964
2/8
Pumps, General
1962-1964
2/9
Pumps, Denver Equipment Company
1962-1965
3/1
Pumps, Galigher Company
1962-1965
3/2
Piping
1963-1966
3/3
Valves and Sumps
1963-1964
3/4
Instruments, General
1962-1963
3/5
Instruments, Automatic Timing & Controls, Inc.
1963
3/6
Instruments, Bailey Meter Company
1963 and undated
3/7
Instruments, Beckman Instruments, Inc.
1963-1964
3/8
Instruments, Foxboro Company
1962
3/9
Instruments, Motor Control Centers
1962-1963
3/10
Instruments, Taylor Instrument Companies
1962-1964
3/11
Instruments, Temperature Control
1963-1964
3/12
Plant Air System
1963
4/1
Drives, General
1962
4/2
Drives, General
1962-1963
4/3
Laboratory Equipment
1963-1964
4/4
Laboratory Equipment
1963-1964
4/5
Cranes
1963
4/6
Cranes, Harnischefeger Corporation
1962-1963
4/7
General and Miscellaneous
1962-1965
4/8
Concentrator Construction Specifications
undated
4/9
Cost Predictions
undated
4/10
Douglas Creek Tailings Dam Testing
1964
4/11
Electronic Controls
1963
4/12
Field Notebook entitled "6315 Plant Control & Ties"
undated
4/13
Fire Protection
1962 and undated
5/1
Gas and Burners
1963 and undated
5/2
Ground and Soil Data
1963 and undated
5/3
Invoices from Kaiser Engineers
1964-1965
5/4
Miscellaneous Equipment Quotations
1962-1963
5/5
Painting
1963
5/6
Process Equipment to be Purchased by Owner
1963
5/7
Water Heaters, Cooley Company
1963-1964
5/8
Western Knapp Engineering Company, Monthly Job Cost Report
1963
5/9
Western Knapp Engineering Company, Requests for Quotations
1962-1963
5/10
List of 815 Original Plant Series Drawings
undated
5/11
Miscellaneous Drawings
1963-1964
5/12
Miscellaneous Drawings
1958-1964

Series II:  Mine and Concentrator Operations, 1957-1968Return to Top

Container(s) Description Dates
Box
OS1
Douglas Mine Underground Daily Reports
1966
OS2
Douglas Mine Underground Daily Reports
1967
OS2
Douglas Mine Underground Daily Reports
1968
Box/Folder
5/13
Douglas Mine Drilling and Loading Reports for Locations 5213C-5312
1966-1967
5/14
Douglas Mine Drilling and Loading Reports for Locations 5313B-5319B,
1966-1967
6/1
Douglas Mine Drilling and Loading Reports for Locations 5407-5419C,
1966-1967
6/2
Douglas Mine Drilling and Loading Reports for Locations 5505C-5517C,
1966-1968
6/3
Douglas Mine Drilling and Loading Reports for Locations 5519B-5813,
1966-1968
6/4
Douglas Mine Production Reports
1964-1965
6/5
Douglas Mine Daily Underground Time Sheets
1967
6/6
Douglas Mine Daily Underground Time Sheets
1967
6/7
Douglas Mine Daily Underground Time Sheets
1967
6/8
Douglas Concentrator Daily Assay Reports
1964
6/9
Douglas Concentrator Daily Assay Reports
1964
6/10
Douglas Concentrator Daily Assay Reports
1965
7/1
Douglas Concentrator Daily Assay Reports
1965
7/2
Douglas Concentrator Daily Assay Reports
1965
7/3
Douglas Concentrator Daily Assay Reports
1965
7/4
Douglas Concentrator Daily Assay Reports
1965
7/5
Douglas Concentrator Daily Assay Reports
1965
7/6
Douglas Concentrator Daily Assay Reports
1965
7/7
Douglas Concentrator Daily Assay Reports
1965
7/8
Douglas Concentrator Daily Assay Reports
1966
7/9
Douglas Concentrator Daily Assay Reports
1966
7/10
Douglas Concentrator Daily Assay Reports
1966
7/11
Douglas Concentrator Daily Assay Reports
1966
8/1
Daily Concentrator Reports
1964
8/2
Daily Concentrator Reports
1964
8/3
Daily Concentrator Reports
1965
8/4
Daily Concentrator Reports
1965
8/5
Daily Concentrator Reports
1965
8/6
Daily Concentrator Reports
1965
8/7
Concentrator Daily Plant Service Reports
1966
8/8
Concentrator Daily Plant Service Reports
1966
8/9
Concentrator Daily Plant Service Reports
1966
8/10
Concentrator Daily Plant Service Reports
1966
8/11
Concentrator Monthly Reports
1964-1966
9/1
Douglas Operation Feeder and Crusher Daily Reports
1966
9/2
Douglas Operation Feeder and Crusher Daily Reports
1966
9/3
Douglas Operation Feeder and Crusher Daily Reports
1966
9/4
Douglas Operation Feeder and Crusher Daily Reports
1966
9/5
Filter Bag Reports
1965-1966
9/6
Concentrator Daily Grinding and Flotation Report
undated
9/7
Reports on Wet Tons Delivered to Coarse Ore Bin
1964-1967
9/8
Ore Storage Silo Inventories
1968
9/9
Monthly Maintenance Reports
1967-1968 and undated
9/10
Equipment Maintenance Schedule Cards
undated
9/11
Equipment Maintenance Schedule Cards
undated
9/12
Equipment Maintenance Schedule Cards
undated
10/1
Douglas Concentrator Maintenance Backlog
1965 and undated
10/2
High Voltage Breaker Maintenance Check-off Sheet
1966
10/3
Maintenance Department, Miscellaneous Material
1967-1968 and undated
10/4
Miscellaneous Maintenance Manuals
undated
10/5
Concentrator Cost Calculations
1965 and undated
10/6
Cost and Variance Statements
1965
10/7
Economic Design and Calculations
1965 and undated
10/8
Mine Operation Cost Calculations
1965
10/9
Specific Gravity Samples of Douglas Ore
1965
10/10
Metallurgy Studies
1965-1966
10/11
Atomic Absorption Analysis
1966
10/12
Fatty Acid Saponification
1966
10/13
Plant Water Supply Studies
1966
10/14
Sink-Float and Floatation Testing on Phosphate Rock
1966
10/15
Emergency Tailings Thickeners
1967
10/16
System for Testing the Moisture and Content of Phosphate Rock
1967
10/17
Concentrator Operation Manuals and Instructions
undated
10/18
Forms to Accompany Concrete Cylinders, Montana State Highway Department
1966
10/19
Labor and Related Expenses
1966-1968 and undated
10/20
Mine and Mill Code Sheets
undated
10/21
Painting Agreement
1968
10/22
Purchasing and Warehousing
1967-1968
10/23
Quotations and Information on Compressed Air Drying and Cleaning Equipment
1968
10/24
Various Publications
1966
11/1
Water and Power Information
1957-1967 and undated
11/2
Weekly Contract Summary
1963-1965
11/3
Work Order 225, Revision of Mine Bunker at Douglas Mine
1968
11/4
Miscellaneous Correspondence
1964-1968
11/5
Miscellaneous Meeting Minutes and Reports
1966 and undated

Series III:  Concentrator Dismantling, 1972Return to Top

Container(s) Description Dates
Box/Folder
11/6
Incoming to Construction from other Departments
1972
11/7
Outgoing from Field to Engineering
1972
11/8
Incoming from Engineering
1972
11/9
Incoming Engineering from other Departments
1972
11/10
Incoming from Purchasing to Field
1972
11/11
Requisition Register
1972
11/12
Incoming from Purchasing to other Departments
1972
11/13
Outgoing to Estimating from Field
1972
11/14
Code of Accounts
1972
11/15
Incoming from Planning and Scheduling to Field
1972
11/16
Detailed Engineering and Construction Schedule
1972
11/17
Incoming from Labor Relations to Field
1972
11/18
Outgoing to Labor Relations from Field
1972
11/19
Outgoing from Equipment Department
1972
11/20
Outgoing from Engineering to Client
1972
11/21
Conference Notes between Home Office and Client
1972
11/22
Monthly Construction Progress Report
1972
11/23
Critical Crafts Report
1972
11/24
Weekly Construction Activities
1972
11/25
Force Report
1972
11/26
Labor and Safety Report
1972
11/27
Historical Report for Job 10090
1972
11/28
Tools
1972
11/29
Equipment, Miscellaneous Correspondence
1972
11/30
Incoming from Vendors to Field
1972
11/31
Outgoing to Vendors from Field
1972
11/32
Daily Reading File
1972

Series IV:  Maps and Drawings, 1961-1976 and undatedReturn to Top

Container(s) Description Dates
case-row:tube
1/1:1
Douglas Mine, Ore Extraction Cross-sections
1966
1/1:2
Douglas Mine, Proposed "A" Cross-section and Road, 1 Sheet
1968
1/1:2
Douglas Mine, Proposed B-North Development, 4 Sheets
undated
1/1:2
Douglas Mine, Chute Cutouts for 5201C, 2 Sheets
undated
1/1:2
Douglas Mine, Proposed C-South Development, 2 Sheets
undated
1/1:3
Douglas Mine Phosphate Ore Reserves, 1 Sheet
undated
1/1:3
Douglas Mine, Additions and Raises, 9 Sheets
1963-1968
1/1:4
Douglas Mine, D-Bed Strip Mining Cross-sections, 19 Sheets
undated
1/1:4
Douglas Mine, D Stockpile Open Pit Mining Cross-sections, 4 Sheets,
undated
1/1:4
Douglas Mine, Canal Base Line Survey, 1 Sheet
undated
1/1:4
Douglas Mine, Drift and Tunnel Locations and Elevations, 9 Sheets,
Undated
1/2:1
Douglas Mill Drawings and Specifications, 4 Sheets
1966
1/2:1
Douglas Mill Construction Drawings
1962-1963
1/2:2
Douglas Mill Construction Drawings
1962-1963
1/2:3
Douglas Mill Construction Drawings
1963
1/2:4
Douglas Mill Boiler-Steam Complex Construction Drawings
1963
1/3:1
Douglas Mine, Tailings Capacity, 2 Sheets
1963
1/3:1
Douglas Mine, Tailings Plans, 11 Sheets
1963-1964
1/3:1
Douglas Operation, Cross-sections of Tailing Pond, 1 Sheet
1966
1/3:2
Douglas Creek Tailings and Diversion Dam
1963
1/3:2
Douglas Operation Tailings Pond, 4 Sheets
1961-1963 and undated
1/3:3
Douglas Mine, Tailings Pond, 21 Sheets
1963-1964 and undated
1/3:4
Douglas Mine, Tailings "Pond B" Cross-sections, 2 Sheets
undated
1/3:4
Douglas Mine, Tailings Pond
undated
1/4:1
Douglas Mine, Tailings Pond, 4 drawings
1963 and undated
1/4:1
Cross-section Douglas Tailings Dam, Stage 1, Rocky Mountain Construction, 1 Sheet
1963
1/4:1
Cross-section Douglas Tailings Dam, Stage 1, Rocky Mountain Construction, 1 Sheet
1964
1/4:2
Douglas Creek Dam Cross-sections, 2 Sheets
undated
1/4:2
Douglas Creek Dam Cross-sections, 1 Sheet
undated
1/4:2
Douglas Mine, Miscellaneous Dam Cross-sections, 3 Sheets
undated
1/4:3
Douglas Mine, Main Dam Drawings, 4 Sheets
undated
1/4:3
Water Supply Storage Dam, 3 Sheets
1963
1/4:4
Douglas Mine, Proposed Access Roads and Elevations, 4 Sheets
1967
1/4:4
Northern Pacific Railway, Prod Tracking to serve Douglas Mine, 1 Sheet,
1962
1/4:4
Douglas Mill, Cross-section of Proposed Railway Grade, 1 Sheet
1963
2/5:1
Douglas Operation, Miscellaneous Cross-sections, 18 Sheets
undated
2/5:1
Tonnage/Cost Budgetary Chart, 1 Sheet
1966-1967
2/5:2
Willow Creek Storage Dam, USDA
undated
2/5:3
Willow Creek Storage Dam, USDA Soil Conservation, 1 Sheets
undated
2/5:3
Anderson, Brock and Relyea Mines, 1 Sheet
1961
2/5:3
Brock Mine, 4 Sheets
1966-1975
2/5:3
Dunkelberg Mine, Sheet
1965
2/5:4
South Luke Mine, 1 Sheet
1976
2/5:4
Warm Springs (Anderson) Mine, Sheet
1973
2/5:4
South Warm Springs (Anderson) Mine, 2 Sheets
1975