system
A chat on subreddit /r/wallstreetbets
human
When I was there, they were pulling about one ounce per ~200 tons of dirt, while their dump trucks could haul 200-250 tons per load.  
  
 As I was leaving my company, the mine was expanding into paydirt that was scoped to yield two ounces per ~200-250 tons. 🥵 Nothing but money with that fucking site.

gpt
What was the price of fuel at that time. 5 years ago it was around $3.75 gal. Today it's about $3.20. A 1000 gallons a day would be a $500 savings per day.