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Triplett Fluorimeter
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| Accession #: | 4046.13 |
|---|---|
| Title: | Triplett Fluorimeter |
| Object Type: | Instrument, Chemical |
| Participants: |
Dawn Mining Company (user)
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| Physical Description: | The fluorimeter has a wooden case and metal workings; it is painted black and light green, and there are multiple gauges, knobs, switches, and levers. The Tripplett Model 420 Fluorimeter measures in Microamperes. There is an operation manual (4046.13b) in a red floppy binder associated with the object. |
| Description: | From its founding in 1955 until closure in 1982, Dawn Mining Company operated this fluorimeter daily to grade uranium ore. Amid a national wave of uranium exploration, tribal members had discovered Spokane Indian Reservation ore deposits and had founded Midnite Mine, Inc. The Dawn Mining Company operated both the mine and a yellowcake processing mill in nearby Ford, Washington. When nuclear power interest declined, Midnite Mine closed - later declared an EPA Super Fund cleanup site. At the mill, contaminated structures, soil, and tailings were buried into deep evaporation ponds. |
| Category: | History |
| Subjects/Topics/Concepts: |
Mining (Industry)
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| Geographical Reference: | Ford (Washington->Stevens County) |
| Dimensions: |
Object H x W x D 11 1/2 x 15 x 18 1/2 in
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| Materials/Techniques: |
wood (plant material) (Material)
metal (Material)
paint (Material)
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| Marks/Inscription: |
JA-2600 Galvanek-Morrison Fluorimeter Jarrell-Ash Company Newtonville, Mass. USA Serial No. 144754 (etched into black metal plate, affixed to front of object)
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| Related Exhibits: | |
| Credit Line: | Gift of the Dawn Mining Company |
To order a reproduction, inquire about permissions, or for information about prices see:
https://www.northwestmuseum.org/collections