NSPS Notebook
Metallic Mineral Processing Plants -  Subpart LL

Applicability: eCFR Subpart LL [ecfr.gov]

This subpart applies to:
  1. Affected facilities at metallic mineral processing plants that commence construction or modification after Aug 24, 1982.
Affected facilities:
  1. At open-pit mines:
    1. Crushers;
    2. Screens.
  2. At mills or concentrators:
    1. Crushers;
    2. Screens;
    3. Bucket elevators;
    4. Conveyor belt transfer points;
    5. Thermal dryers;
    6. Product packaging stations;
    7. Storage bins;
    8. Enclosed storage areas;
    9. Truck loading or unloading stations;
    10. Railcar loading or unloading stations.

Not subject to this subpart:
  1. All facilities located in underground mines;
  2. All facilities subsequent to and including the beneficiation of uranium ore at uranium ore processing plants.
Known Sources in NDEE Jurisdiction:
Date of Original Final Rule: 12/24/80
Amendments Dates: 10/17/2000
State Regulations: Title 129, Chapter 12, Section 001.41

Previously: Chapter 18, Section 001.29
Federal Regulations: 40 CFR 60.380
Related Rules:

NSPS - 40 CFR Part 60

Subpart NN - Phosphate rock plants
Subpart OOO - Nonmetallic mineral processing plants
Subpart UUU - Calciners and dryers in nonmetallic mineral industry
Subpart Y - Coal preparation and processing plants

NESHAP - 40 CFR Part 63
Subpart RRRRR - Taconite iron ore processing
Regulations and Federal Registers: eCFR Subpart LL [ecfr.gov]
FAQs, Fact Sheets, and Rule Summaries:
Other Information and Resources:
Page Last Updated: 12/21/22