You will have to ask the people in the industry.
In any event, the statistics on work accidents, illnesses or the back pain that people experience show to what extent people are in better health than in the past, as shown by the figures in the image and the twenty or so other similar illustrations.
Today, to work in the resources industry, you press a button or pull a few levers. In the past, people had to use axes, shovels and picks. I honestly believe that things are better now than they were back then.