... to permanent infrastructure. The hazard factors such as boulder source areas, boulder potential energy, slope angle and vegetation are evaluated using geographic information system (GIS) techniques. Preferential values ranging from 0.11 (least importance) to 1 (equal importance) are assigned to each hazard...

... slopes that modify the trajectories (trampoline effect, hard points that favor the rebounds) and which are not always presented in the drawings; in order to see the small embossed irregularities on the ground, that can be easily hidden by the vegetation, it is essential for clearing the area to be able...

... by the vegetation, it s essential for clearing the area to be able to carry out the rebound. The ground surface: since the bedrock till the loose soil, that has influenced on rebounds (variable power dissipation during impacts), as well as the size and shape of the blocks that may arise. Each slope is dif- ferent...

...). ‘Risk’refers to exposure to a hazard and can be defined as the product of probability and loss (Smith 2001). Upstream Oil & Gas Susceptibility Reservoir Characterization strength study area hazard classification outcrop vegetation structural geology slope movement historical record...

... by the streams and winds, and spread over agricultural land impairing its fertility. The waste spread also change the composition of soil and affects the growth of vegetation. Seeping water during rainy season from these dumps contaminate ground water, river and stream water and also reduce fertility...