On 5-11-2018 14:31, Tim R wrote:
On Saturday, November 3, 2018 at 12:10:44 PM UTC-4, wrote:
vents etc. There were also zero precautions available for nitrate film. And lots of mercury in the rectifiers. The projection booth was all fireproofed though - but the fire extinguishing equipment totalled a single 1kg chemical extinguisher. A cap that might have killed someone that messed with it without knowing what they were doing would not have raised any concerns.


NT

We have a projection room in a building, no longer used and now repurposed to a music library. The walls are lined with metal. I've been told it was zinc, but have no way of checking.

Apply a bit of acid. with a bit of zinc it starts bubbling.