Heading home at the end of the day, along the mine drift. This is the same drift Vale miners use to access the ramps they drive to their job sites. MARY KATHERINE KEOWN/Sudbury Star jpg, SU, apsmc

The personal protective equipment used by researchers for emergency response is always kept close at hand. MARY KATHERINE KEOWN/Sudbury Star Apple Photos Clean Up

The entire lab was carved out of the Canadian Shield, so there are few natural walls within SNOLAB that are straight. MARY KATHERINE KEOWN/Sudbury Star

These large blue tubes comprise the SNOLAB HVAC system. They deflate and collapse during drills and emergencies, in order to stop air flow from the mine. MARY KATHERINE KEOWN/Sudbury Star jpeg, SU, apsmc

Juliette Deloye, one of two hosts for the day, shows off a photomultiplier

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