Contact

Corrections are the most useful thing you can send.

Reporting a correction

If a figure here is wrong, the most helpful message includes:

• Which component page, and which number
• What you measured or where your figure comes from
• The weight processed, if it was a measured result — that context matters more than the yield itself

Measured results beat published estimates every time. If you ran a known weight through a known process and weighed the output, that is genuinely valuable data and it will get used.

Get in touch

Email: [email protected]

Replace this address with your own before going live — see the deploy notes in the build folder.

What this guide can't help with

• Valuing a specific lot sight-unseen. Assays vary several-fold within any visual grade. Get a written quote.
• Refining chemistry support. This guide deliberately stops at "sort it and sell it".
• Anything involving airbag inflators. Those are regulated hazardous waste and in several US states selling them is a criminal offence.