The idea is to speed up renewable energy projects by preventing mining claims from sidetracking solar power plants and wind farms.

FORBES: Obama Administration to Put Solar and Wind Lands off Limits to Mining

The best way to help exports, say analysts, is to speed up privatisation and to restructure state industries, such as mining and steel-making.

ECONOMIST: The Polish zloty

Mining involves solving a hard mathematical problem and miners typically use large numbers of computers to speed up the number-crunching involved.

BBC: Bitcoin miners generating high energy bills

Mining involves solving a hard mathematical problem and miners typically use large numbers of computers to speed up the number crunching involved.

BBC: Bitcoin miners hit back at cyber-thieves