Chromium
• 32 - Stone, Clay, Glass and Concrete Products
• 33 - Primary Metal Industries
• 34 - Fabricated Metal Products, except machinery & transportation products
• 36 - Electronic and Other Electrical Equipment, except computer equipment
• 37 - Transportation Equipment
Copper
• 27 - Printing, Publishing, and Allied Industries
• 28 - Chemicals and Allied Products
• 30 - Rubber and Miscellaneous Plastics Products
• 33 - Primary Metal Industries
• 34 - Fabricated Metal Products, except machinery & transportation products
• 36 - Electronic and Other Electrical Equipment, except computer equipment
• 38 - Measuring, Analyzing & Controlling Instruments
Lead
• 30 - Rubber and Miscellaneous Plastics Products
• 33 - Primary Metal Industries
• 34 - Fabricated Metal Products, except machinery & transportation products
• 36 - Electronic and Other Electrical Equipment, except computer equipment
Nickel
• 32 - Stone, Clay, Glass and Concrete Products
• 33 - Primary Metal Industries
• 34 - Fabricated Metal Products, except machinery & transportation products
• 36 - Electronic and Other Electrical Equipment, except computer equipment
• 37 - Transportation Equipment
Phenol
• 36 - Electronic and Other Electrical Equipment, except computer equipment
Trichlorobenzene
• 36 - Electronic and Other Electrical Equipment, except computer equipment
Trichloroethane
• 26 - Paper and Allied Products
• 27 - Printing, Publishing, and Allied Industries
• 28 - Chemicals and Allied Products
• 30 - Rubber and Miscellaneous Plastics Products
• 34 - Fabricated Metal Products, except machinery & transportation products
• 35 - Industrial and Commercial Machinery and Computer Equipment
• 36 - Electronic and Other Electrical Equipment, except computer equipment
• 37 - Transportation Equipment
• 38 - Measuring, Analyzing & Controlling Instruments
Zinc
• 27 - Printing, Publishing, and Allied Industries
• 28 - Chemicals and Allied Products
• 30 - Rubber and Miscellaneous Plastics Products