NR 661.0004(2)(f)2.c. c. Buffing dust generated by the following subcategories of the leather tanning and finishing industry: hair pulp or chrome tan or retan or wet finish, hair save or chrome tan or retan or wet finish, retan or wet finish, no beamhouse, through-the-blue.

NR 661.0004(2)(f)2.d. d. Sewer screenings generated by the following subcategories of the leather tanning and finishing industry: hair pulp or chrome tan or retan or wet finish, hair save or chrome tan or retan or wet finish, retan or wet finish, no beamhouse, through-the-blue, and shearling.

NR 661.0004(2)(f)2.e. e. Wastewater treatment sludges generated by the following subcategories of the leather tanning and finishing industry: Hair pulp/chrome tan/retan/wet finish; hair save/chrome tan/retan/wet finish; and through-the-blue.

NR 661.0004(2)(f)2.f. f. Wastewater treatment sludges generated by the following subcategories of the leather tanning and finishing industry: Hair pulp/chrome tan/retan/wet finish; hair save/chrome tan/retan/wet finish; and through-the-blue.

NR 661.0004(2)(f)2.g. g. Waste scrap leather from the leather tanning industry, the shoe manufacturing industry, and other leather product manufacturing industries.

NR 661.0004(2)(f)2.h. h. Wastewater treatment sludges from the production of TiO2 pigment using chromium-bearing ores by the chloride process.

NR 661.0004(2)(g) (g) Solid waste from the extraction, beneficiation, and processing of ores and minerals, including coal, phosphate rock, and overburden from the mining of uranium ore, except as provided under s. NR 666.112 for facilities that burn or process hazardous waste.

NR 661.0004(2)(g)1. 1. For the purposes of this paragraph, beneficiation of ores and minerals is restricted to the following activities: crushing; grinding; washing; dissolution; crystallization; filtration; sorting; sizing; drying; sintering; pelletizing; briquetting; calcining to remove water or carbon dioxide; roasting, autoclaving, or chlorination in preparation for leaching, except where the roasting, autoclaving, chlorination, or leaching sequence produces a final or intermediate product that does not undergo further beneficiation or processing; gravity concentration; magnetic separation; electrostatic separation; flotation; ion exchange; solvent extraction; electrowinning; precipitation; amalgamation; and heap, dump, vat, tank, and in situ leaching.

NR 661.0004(2)(g)2. 2. For the purposes of this paragraph, solid waste from the processing of ores and minerals includes only the following wastes as generated:

NR 661.0004(2)(g)2.a. a. Slag from primary copper processing.

NR 661.0004(2)(g)2.b. b. Slag from primary lead processing.

NR 661.0004(2)(g)2.c. c. Red and brown muds from bauxite refining.

NR 661.0004(2)(g)2.d. d. Phosphogypsum from phosphoric acid production.

NR 661.0004(2)(g)2.e. e. Slag from elemental phosphorus production.

NR 661.0004(2)(g)2.f. f. Gasifier ash from coal gasification.

NR 661.0004(2)(g)2.g. g. Process wastewater from coal gasification.

NR 661.0004(2)(g)2.h. h. Calcium sulfate wastewater treatment plant sludge from primary copper processing.

NR 661.0004(2)(g)2.i. i. Slag tailings from primary copper processing.

NR 661.0004(2)(g)2.j. j. Fluorogypsum from hydrofluoric acid production.

NR 661.0004(2)(g)2.k. k. Process wastewater from hydrofluoric acid production.

NR 661.0004(2)(g)2.L. L. Air pollution control dust/sludge from iron blast furnaces.

NR 661.0004(2)(g)2.m. m. Iron blast furnace slag.

NR 661.0004(2)(g)2.n. n. Treated residue from roasting/leaching of chrome ore.

NR 661.0004(2)(g)2.o. o. Process wastewater from primary magnesium processing by the anhydrous process.

NR 661.0004(2)(g)2.p. p. Process wastewater from phosphoric acid production.

NR 661.0004(2)(g)2.q. q. Basic oxygen furnace and open hearth furnace air pollution control dust/sludge from carbon steel production.

NR 661.0004(2)(g)2.r. r. Basic oxygen furnace and open hearth furnace slag from carbon steel production.

NR 661.0004(2)(g)2.s. s. Chloride process waste solids from titanium tetrachloride production.

NR 661.0004(2)(g)2.t. t. Slag from primary zinc processing.