Methodology

Sulfur Wire publishes open North American recovered sulfur fundamentals with provenance on each figure.

Source hierarchy

1. verified_public: government statistics (AER, StatCan, Port of Vancouver, USGS) with URL and date.
2. derived: arithmetic from verified public inputs (FOB + freight).
3. industry_estimate: attributed trade-press or analyst figures, labeled.
4. platform_estimate: Sulfur Wire interpolation, labeled.

Price indices

Hub mids use open news, USGS, and OSP prints tagged on each row. Weekly PRA assessment series stay behind commercial licenses.

Update cadence

Inventory and trade series refresh when agencies publish. Daily automation files open intel under data/intel/. Weekly Outlook summarizes the week.

Tips

Forward tips to tips@sulfurwire.com. Claims are checked against public sources before site use.