Hard labor

I'm currently into watching National Geographic and Discovery channels lately. One of my favorites are Crash Test Investigation and Seconds from Disaster. And recently, I watched Gold rush on Discovery channel and I amazed how much gold bullion they get from simply digging. Well, I know it's not easy to dig but I'm just blown-out how they do it. Stuck in the mountain for several months, away from the family. Some guys been working there all their lives. Now that's what I call hard labor.