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The residue left after harvested trees are converted to timber and wood for other purposes such as fibre board and papeer pulp, represents one-third of the total mass of trees. It could be a valuable...
Explains landfill gas technology as used in the UK, from the point of view of using this commercially viable energy source.
Shows how wind turbines can produce safe, reliable, cost-effective and non-polluting electricity. Part 1 covers the properties of wind and shows how turbines work. Part 2 shows a vertical axis machine being...
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