[ These are my notes from this book about how we went from an organic sustainable economy to a temporary fossil-fueled one. It's one of the few books I've found that explains what life was like before fossil fuels in a biophysical way that focuses on energy and population.
LONGWALL MINING Overview. In the method of secondary extraction known as longwall mining a relatively long mining face (typically in the range 100 to 300m but may be longer) is created by driving a roadway at right angles between two roadways that form the sides of the longwall block, with one rib of this new roadway forming the longwall face.
Solar Energy Advantages and Disadvantages. To provide sufficient power and reach the load demand, there are different ways for generating the electric power using different energy sources such as Solar Energy, Thermal Energy, Wind Energy, Nuclear Energy, and so on.
Federal Review of Nuclear Power. Despite thirty years of development and billions of dollars in subsidies, the Canadian nuclear industry is floundering. According to the draft report of an internal government review, it is doubtful "whether the nuclear industry will survive the 1980's" [35: p.125]
Burning coal emits harmful waste such as carbon dioxide, sulphur dioxide, nitrogen oxides, sulphuric acids, arsenic and ash. It also emits twice as much carbon dioxide when compared with natural gas to produce the same level of heat, which increased the levels of harmful greenhouse gases emitted into the earth's atmosphere.