My grandfather died in his 50s likely due to constant exposure from industrial xrays in the 50s and 60s. He was a college educated white guy in the US, so I’m guessing they give even fewer fucks about these guys.
This looks like a fluoroscope, basically an X-ray that is constantly turned on. The tech is looking at a live X-ray view, not a film transparency.
The radiologic exposure for both of them is orders of magnitude higher than a normal x-ray that we think about. A normal xray exposes you for less than a second, this is bombarding him with X-rays the entire time he is standing there.
South African diamond miner being x-rayed at the end of his shift to prevent theft, 1954 (lemmy.world)