I don't recall this ever being reported as a hanger.  It was a
warehouse in Rhode Island (Naval, I think) which was purchased,
dismantled, and rebuilt in Troy.  Yes, the main walkway is next
to the ice, but it wasn't glass when built; it was Anchor fencing.
This was an advantage for the officials who could hook their
fingers it at arms length above their heads and pull up to avoid
onrushing players!
 
At that time college icing rules were more like the NHL - i.e.
if an offensive player could touch the puck first, icing was
waved off.  This made for some mad dashes into the corners
(probably why the rule was changed!).  Of course the first player
there ususally got crushed into the boards by the other chasers.
The much-practiced, local technique (home ice advantage!) was to
swipe at the puck as you reached the corner and simultaneously
leap so your hips got into the fencing (preferably not at a post).
The fencing would give under your weight (and the weight of all
the ones chasing you) and you would get a nice spring back onto
the ice.  If the timing was right, you could get a forearm up as
you came off and catch your incoming opponent a solid one right
in his shoulders.  (No! Of course not the head! :-) )  Plexiglass
just isn't the same!