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INDUSTRY FIELD GUIDE

Nonferrous refining data for AI stream and sample records

USGS publishes zinc industry information, providing one concrete example within nonferrous smelting and refining.

By Fiund · Updated 2026-11-05

NAICS 331410 · Nonferrous Metal (except Aluminum) Smelting and Refining

USGS publishes zinc industry information, providing one concrete example within nonferrous smelting and refining. A data proposal can focus on a specific material stream and its evidence rather than treating every metal process as interchangeable. USGS zinc statistics and information

Construct a fictional refining flow with an intermediate, a final lot and a return stream. Create sample tickets with explicit stream identifiers and laboratory reports. Ask the assistant which report concerns the final lot requested by the buyer. Include a high-looking result from the intermediate stream and an unsigned correction to a sample number. The key should preserve both the material stage and the correction's unresolved status.

Label stream, lot, sampling point, property, unit and document authority. Hold out a new stream naming scheme for evaluation. Score wrong-stage substitution, use of the unsigned correction and unsupported final-product claims independently. The model should cite the actual sample relationship rather than select the most favorable number.

Use invented records and values without physical processing. Real refinery chemistry, customer specifications and third-party laboratory documents need disclosure authority. Describe the evidence-selection task and expert key in the licensing brief. Confirm the buyer's accepted material scope before preparing a larger operating archive.

Discuss this original manufacturing sample with Fiund

Original Fiund exercise

The return loop is not the final lot

A toy flow diagram uses three record types and no chemical or operational information.

Fictional records supplied to the evaluator
RecordSourceWhat it records
1Flow diagramInput I2 → intermediate J2; J2 can route to final F2 or return R2.
2Sample ticketS8 collected from R2 before reentry.
3Report indexReport S8 labeled 'after J2'; final-lot field blank.

Question for the model

Can S8 be filed under final lot F2?

Show the reference answer and checks

No. Record 2 locates the sample on return R2, which is a different branch from F2 in record 1. The loose label in record 3 is compatible with both branches and cannot establish final-lot identity. Use the return-stream scope.

  • Joining on the shared upstream stage
  • Treating a return as verified final product

Fields to preserve

stream_branch
Disambiguates outputs of one stage
sample_location
Pins where material was collected
final_lot_link
Remains empty unless supported

Test another case

Sample a merged branch and provide a documented split ratio only after collection; avoid applying future information to the earlier sample.

No refining process design, composition, production records or commercial grade claims.

Download this fictional example and answer key (JSON)

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.

Primary sources and further reading