Kind of embarrassing, but until recently I had no idea how much of the world’s economy is based on coal from QLD. For example – Queensland exports half the world’s coking coal which is used to make steel. HALF! That means 50% of the world’s steel is manufactured with QLD coal. For the last year I’ve been working with a client who are coal mining consultants in QLD. They’ve been giving me an education. Mining – mostly coal, coal seam gas and bauxite with some oil shale and natural gas – makes up about 9% of the QLD economy. Meanwhile the cost of solar is dropping exponentially. I have to wonder what’s going to happen to the QLD economy over the next 20 years when coal becomes a dirty word and people are using solar-generated electricity to make steel instead.