Donna Coté Welch, CMSP , STS. Currently works at AECOM Energy & Construction, Inc. in J D Mining Services. Donna started working in mining for small underground silver-gold mines in Leadville, CO reopening abandoned mines for production in the late 1970’s. I have worked at large open pit copper-zinc-phosphate mines, at underground gold-copper mines; as well as owning an MSHA training/compliance company focusing on small mine MSHA compliance.