We were limited to 30 minutes a day max when working in the storage igloos where the 30MM APIT was stored. Those depleted uranium penetrators are no joke when there's a 100,000 of them surrounding you.
U.M.
But it's depleted. Friendly jest*** The same thing for all the DU frontal armor that the M1A1 Abrams had I think it was about the same when those boxes was open up for maintenance