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4/2003 Rev 2 I.4.9c – slide 1 of 8
Session I.4.9c
Part I Review of Fundamentals
Module 4 Sources of Radiation
Session 9c Fuel Cycle - Milling
IAEA Post Graduate Educational CourseRadiation Protection and Safety of Radiation Sources
4/2003 Rev 2 I.4.9c – slide 2 of 8
Milling
OPEN CUT MINEORE STOCKPILE
CRUSHERS
BALL
MILLWATERADDED
GRINDS TO AFINE POWDERTHICKENER
THICKENER
THICKENER
ACIDADDED
LEACHINGTANKS SAND
FILTER SOLVENTEXTRACTION
URANIUMPRECIPITATION
TANK
CENTRIFUGE
DRYERU3O8U3O8
TOMARKET
WASTE TOTAILINGS DAM
URANIUM RICH SOLUTION
4/2003 Rev 2 I.4.9c – slide 3 of 8
Uranium Mills in the United States
4/2003 Rev 2 I.4.9c – slide 4 of 8
Ore Processing
4/2003 Rev 2 I.4.9c – slide 5 of 8
Yellowcake
4/2003 Rev 2 I.4.9c – slide 6 of 8
Uranium Mill Tailings
4/2003 Rev 2 I.4.9c – slide 7 of 8
Facility Tailings (tx106)
Quivira (Ambrosia) 33.0ARCO (Bluewater) 24.2Homestake (Grants) 22.0 EXXON (Highlands) 11.3 Pathfinder (Lucky MC) 10.7 Atlas (Moab) 10.6 UMETCO (Gas Hills) 9.2WN (Split Rock) 7.7Pathfinder (Shirley B) 7.1
Conventional US Mill Tailings
Facility Tailings(tx106)
Petrotomics 6.4ANC (Gas Hills) 5.9Union Pac (Bear Creek) 4.7UNC (Church Rock) 3.6TVA (Edgemont) 3.5Rio Algom (Lisbon) 3.3Kennecott (Sweetwater) 2.4IUC (White Mesa) 2.2SOHIO (Western L) 1.2Plateau (Shootaring) 0.05
4/2003 Rev 2 I.4.9c – slide 8 of 8
Ore dust and radon emissions from ore crushing, sorting, and storage
Yellowcake dust from drying and packaging area
Windblown particulates and radon emission from the tailings disposal area
Radiological Hazards of U Milling