UK HSE
https://www.hse.gov.uk/lung-disease/silicosis.htm
Construction
https://www.hse.gov.uk/construction/healthrisks/cancer-and-construction/silica-dust.htm
Quarries
https://www.hse.gov.uk/quarries/silica.htm
Health surveillance
https://www.hse.gov.uk/pubns/books/healthsurveillance.htm
