the crusher or grinding mill upon the material. Crusher means a machine used to ... 4040V7.TXT 31. 742 §60.671 40 CFR Ch. I (7–1–15 Edition) includes, but is not limited to, the fol-lowing types: Jaw, gyratory, cone, roll, rod mill, hammermill, and impactor. Enclosed truck or railcar loading sta-tion means that portion of a non-