Over here in NJ we calll the 'Mineralacs' "cowboys"! BTW, are they listed for sealtite?
The wide angle view now reveals .....unsupported EMT; is the disco holding the EMT? or...is the EMT holding the disco?
If you take a close look at the bottom left hand corner, you can see the EMT is supported by a big block of wood.
Here is a blow up.