Engineered Stone cut inside the house. Should I be worried?

I'm getting my kitchen renovation done and my builder subcontracted masonry guys to install the bench top which is made out of Engineered Stone. It was pre-cut at their factory but they brought it in and cut a hole for the sink mixer inside the kitchen, in my house. They didn't clean up the dust or anything and I was home with my daughter and wife while they did the work.How worried should I be about the engineered Stone dust particles?