Christopher Kennedy University of Toronto, Department of Civil Engineering, 35 St. George Street, Toronto, Ontario, Canada M5S IA4 Coal is a valuable resource. It provides a significant amount of the World's energy supply and it is the basis for many industries. However, in areas where coal lies close to the Earth's surface and has been exploited by open cast tech niques, radical alterations of landscape and significant impacts on the envi ronment have occurred. This report was prepared to provide guidance to those who are responsible for the prevention of environmental effects from surface...

Christopher Kennedy University of Toronto, Department of Civil Engineering, 35 St. George Street, Toronto, Ontario, Canada M5S IA4 Coal is a valuable resource. It provides a significant amount of the World's energy supply and it is the basis for many industries. However, in areas where coal lies close to the Earth's surface and has been exploited by open cast tech niques, radical alterations of landscape and significant impacts on the envi ronment have occurred. This report was prepared to provide guidance to those who are responsible for the prevention of environmental effects from surface...

Die Aussage "Boden sollten der Funktion angepasst werden, fUr die sie gebraucht werden: In der Landwirtschaft als Substrat fUr die Produktion und an anderer Stelle vielleicht auch fUr okologische Belange" ist ein eindeutiges PHidoyer fUr die Anpassung der Umwelt an unsere BedUrfnisse. DemgegenUber stehen die Stim men fUr eine rigorose RUckentwicklung zur "NatUrlichkeit" unserer Umwelt. Beides sind Extrempositionen, mit denen sich die moderne Umweltforschung auseinandersetzen muss, denn der Konflikt zwischen den modernen Kitlturland schaften, die in erster Linie dem Nutzen dienen, und den noch...