positively. On the variable cost side, apart from normal inflation, as highlighted since Q2 fuel prices have increased versus the same period in 2017. The latest fuel shipment in December was more economical

, and also economical and financial engineering; and also to operate a business in improving projects that are relating or affecting natural resources and environment, either water, land, air, noise, or

, mechanical engineering, mining engineering, sanitary engineering, environmental engineering, and also economical and financial engineering; and also to operate a business in improving projects that are

engineering, survey engineering, mechanical engineering, mining engineering, sanitary engineering, environmental engineering, and also economical and financial engineering; and also to operate a business in

projects that will make heavy fossil fuel use both more economical and likely to be locked-in for the long term. Alternatively, it could be argued that transporting coal by rail is preferable to transporting

engineering, sanitary engineering, environmental engineering, and also economical and financial engineering; and also to operate a business in improving projects that are relating or affecting natural resources