> But mining accounts for a minimal portion of their economies and jobs, a recent study by various NGOs showed.
Which of course is great when you're sitting in your NGO provided air-conditioned office. But a few tens of thousands of miners might disagree with the definition of 'minimal'. For them it likely was all of their income.
I'm all for change like this but I would prefer a more gradual approach. Such as 'no new people are allowed to be hired for mining' or other more or less automatic mechanisms.