Avísenme cuando se presente un nuevo incidente de la MSHA en cualquier mina que controle Dennis Barretto et al.
IMPROPER OR ABNORMAL WORKING PROCEDURE WHEREAS ONE STONE HAD BEEN DISTURBED WHEN CHAIN WAS HOOKED TO SECOND STONE FIRST ONE NOT HAVING BEEN BLOCKED FELL ON MAN
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.
The federal record itself stays free on this site. What costs money, and why.