INDUSTRY FIELD GUIDE
Secondary nonferrous metal data for AI receipt and output evidence
Secondary nonferrous processing can join several incoming material categories into a later output.
NAICS 331492 · Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum)
Secondary nonferrous processing can join several incoming material categories into a later output. USGS publishes lead industry information as one relevant material context. An original document exercise can distinguish receipt descriptions from measured output evidence. USGS lead statistics and information
Write fictional incoming-lot tickets, a charge ledger and output sample reports. Give one receipt a declared category and another an unverified description. Ask the assistant to reconstruct the documented input set for a selected output. Include a return from an earlier run with a recorded quantity but no source identifier. The key should preserve the unknown ancestor rather than assign it to the newest receipt.
Label receipt, declared category, charge event, return material, output and sample evidence. Evaluation can change the naming convention and split one output into two dispatches. Score invented ancestry, supplier declarations treated as output assays and missed dispatch branches independently. A complete case should retain enough evidence for an accepted association.
Use self-authored forms and invented values with no handling of metal or residues. Supplier identities, commercial terms, charge recipes and laboratory reports require appropriate permissions. Describe the lineage task and qualified reviewer key in the licensing proposal. Confirm buyer fit before preparing an operating archive or expanding collection.
Discuss this original manufacturing sample with Fiund
Original Fiund exercise
A receipt's identity persists without an output assay
A fictional ledger represents receipts and output records with paper tokens.
| Record | Source | What it records |
|---|---|---|
| 1 | Receipt index | Incoming R7 and R8 recorded separately. |
| 2 | Charge ledger | Output lot O2 linked to both R7 and R8; quantities not listed. |
| 3 | Output sample index | Report Q2 applies to O2 as a whole. |
Question for the model
Can Q2 be labeled as an assay of R7?
Show the reference answer and checks
No. Records 1 and 2 distinguish two incoming receipts that contribute to O2. Q2 in record 3 is scoped to the output, not either receipt separately. Retain both input lineage edges and avoid allocating the output result or quantities back to R7.
- Attributing a combined result to each incoming lot
- Inferring contribution weights from number of receipts
Fields to preserve
- receipt_key
- Identifies source lots independently
- output_lot
- Groups mixed output evidence
- contribution_quantity_status
- Makes missing attribution explicit
Test another case
Include a receipt recorded in intake but never linked in the charge ledger; exclude it from the output lineage.
No real source supplier data, metal processing steps, composition values or traceability guarantees.
Discuss a contribution
Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.