[1] CARACAL: Competent Authorities for Registration, Evaluation, Authorisation and restriction of Chemicals (REACH) and Classification, Labelling and Packaging (CLP)

[2] InnoMat.Life: Innovative Materialien und neue Produktionsverfahren –

Sicherheit im Lebenszyklus und der industriellen Wertschöpfung,

http://www.innomatlife.de/

[3] US OSHA – Occupational Safety and Health Administration:

Hazard Alert: Worker Exposure to Silica during Countertop Manufacturing, Finishing and Installation,

(02/2015), 8 p.,

https://www.osha.gov/Publications/OSHA3768.pdf