Goodbye notes on his office door Monday were a sad reminder that Professor Bill Gregg won't be teaching students anymore.
"He was an excellent teacher. He put a lot of effort into teaching," said Chair of the Geophysical Engineering Department, Wayne Pennington. "He would spend an hour with an individual student, trying to make sure they understood a specific concept, if that's what it took."
Sixty-year-old Gregg fell 225 feet into the No. 2 shaft at the Quincy Mine on Saturday afternoon, resulting in his death.
The Houghton County Sheriff's Department were still awaiting autopsy results on Monday.
Funeral arrangements haven't been announced.
Ironically, the Michigan Tech professor was working on a ladder system for emergencies. Gregg was surveying the shaft to replace wooden emergency ladders with steel ladders.
A member of the Quincy Mine Hoist Association Board of Directors, Gregg was in charge of maintenance and safety of the mine. He made weekly, sometimes daily visits, volunteering his labor.
Gregg's car sat in the parking lot Monday, a lone reminder of the man who volunteered hours to make the mine safe.
"He'd be down there scaling loose rock, looking for loose rock and scaling it," said Quincy Mine Hoist Association Board of Director's member, John Sullivan. "He'd be putting rock bolts in the mine."
Mine tours officially ended on November 29. They will resume, as planned, late next spring.
Counselors met with Gregg's classes Monday and will be available to students.
They have one week left of regular classes before exams and Christmas break. The Geology Department isn't sure what they'll do with his classes next semester.