Steinberger said that Siemens' responses during their discussions were not good enough: "Basically, the problem is Siemens want to present themselves as green and low carbon. But this is not a system where you can put forward the minuses on the balance sheet and not count the pluses. We cannot afford any more pluses on the balance sheet in terms of extraction and emission of fossil fuels, and this plus does count against them." Everything about the planned Adani Carmichael mine is huge. Covering an area of 280 sq km, it would fill the distance between London and Manchester. It is estimated it will produce 60m tonnes of coal every year for 60 years. The project is likely to produce 4.7 billion tonnes of greenhouse gas emissions, which is equal to 0.5% of the remaining carbon budget globally to limit warming to less than 2 degrees centigrade. Its annual carbon emissions will be equivalent to the outputs of single countries such as Malaysia and Austria.