<span>Hard Rock
mining works when a narrow horizontal vein orebody will be mined by room and
pillar or a longwall method whereas a vertical narrow vein orebody will be
mined by an open stoping or cut and fill method. However, there are further
consideration needed for the strength of the ore as well as the surrounding
rock. In addition an orebody hosted in strong self-supporting rock may be mined
by an open stoping method while an orebody hosted in poor rock may need to be
mined by a cut and fill method were the void is continuosly filled as the ore
is removed. </span>
The form of energy would be C)Geothermal energy. Geothermal energy is heat within the earth so people can use this heat as steam or hot water to heat buildings and generate electricity
The answer is carbon dioxide
Are surfaces that represent gaps in the geologic record that formed whenever layers were not deposited for a time or else layers were removed by erosion
