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Classification Digest 2.0→Class Code List→Class Code 1439→Phraseology and Description
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Class Code Information

Phraseology

Smelting – Electric Process

Description

Code 1439 applies to employers engaged in refining ferrous and non-ferrous metals from raw ores, milled ores, or scrap metals, and includes the refining of coke, coal, quartz, limestone, silica bearing sand, bauxite, corundum, carbon, zirconium, and other materials. It also covers the manufacturing of carborundum, artificial carbon or graphite, using the electric process, where electric furnaces can exceed 3000 °F.

This classification includes the preparation and fusion of the raw materials at extremely high temperatures as well as any subsequent processing such as machining, crushing grinding, pulverizing or other sizing requirements. Raw materials can be crushed or otherwise processed,fed into an electric furnace and melted down. Molten material can be poured into ingots, cooled and further processed by grinding and mixing with other ingredients before reheating.

Raw materials can also be placed in a trench mold lined with fire brick and an electrode at each end. The current passes through the mold and fuses the material within. Any other process required to produce an end product would be included in this classification.

Assignment by Analogy

Abrasives - calcium carbide and silicon carbide

Operations to be Separately Rated

  1. Manufacturing:
    1. Coke.  Refer to Code 1470 “Alcohol Mfg. – Wood & Drivers.”
    2. Graphite – not artificial.  Refer to Code 1452 “Ore Milling & Drivers.”
    3. Solder:
      1. In paste and flux form.  Refer to Code 4557 “Ink Mfg.”
      2. In bars that are melted and poured.  Refer to Code 3085 “Foundry – Non-Ferrous.”
      3. In wire form, extruded by hydraulic press.  Refer to Code 1925 “Die Casting Mfg.”
  2. Blast furnace operations:
    1. Involving smelting, sintering or refining metals other than lead or iron.  Refer to Code 1438 “Smelting, Sintering or Refining – NOC – Metals – Not Iron or Lead & Drivers.”
    2. Involving smelting, sintering or refining lead or iron.  Refer to Code 1430 “Smelting, Sintering or Refining Lead & Drivers.”
  3. Ore milling by crushing, concentration or amalgamation.  Refer to Code 1452 “Ore Milling & Drivers.”     
  4. Reclaiming lead in the process of smelting, sintering or refining metals in any form or quantity.  Refer to Code 1430 “Smelting, Sintering or Refining Lead & Drivers.”       
  5. Steel making in electric or open-hearth furnaces and the Bessemer or crucible process.  Refer to Code 3004 “Iron or Steel Mfg. – Steelmaking & Drivers.”

Industry Group

All Other Manufacturing