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.
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.
Try forty or fifty years, unless you got your first job at 40. Unless you’re a boomer, you aren’t even getting full social security until 67 and unless you saved like a motherfucker you probably won’t retire till your 70s.