Industrex is used for nondestructive testing, that is, x raying welds, castings etc for , well, industry [and all kinds of stuff] It's apparently made to survive abuse and nasty climate conditions. One weird website descibes it as single side emulsion, but the data sheets I've looked at say overcoated 2 sides on sheet film base.
I surfed for this account the NDT folks use various widths of roll film [60 70 100 mm] and I've not found 70mm recently that didn't have a HUGE minimum quantity. Sadly, Industrex appears to be too thick for camera rolls.
But it's CHEAP -less than $300 for 150 meters. Then again that's waaay too $much to try for pictorial work without some better idea of suitability for pictorial use. I'll continue to investigate cuz Fuji and Agfa still list similar products. The NDT and health folks just don't speak in terms that pictorialists use. Whudda THEY mean by "high contrast" "high speed" and "fine grain" ? I can accept "fine grain" for basic ortho emulsions, and would guess "high contrast" could be tamed in manual processing with familiar developers like D76 or Xtol- I've made aerial film so behave, but what is "high" for speed.??
Oh yeah, one last thing, Kodak touts this as T-grain tech
Hope you try some and report !! :>))