Interesting about the masks, Judi. I went on a tour of the marble quarries not long after I moved here. I was horrified that the Artisans especially, did not wear them or goggles. They were coated in dust from head to toe. I queried it with the guide and he said they were all given them, plus toe protector boots, goggles etc but they refused to wear them and apparently there was no law to make them. It is possible that has changed as it was nearly 15 years ago that I went.
As for Cosentino, the Spaniard I was speaking to said that his fellow workers did not wear masks but that he did. He will not eat any fruit or veg grown in this valley due to, he says, contamination. He did collect all my ripe Nispero though before he left!!!