Streptomycin is also occasionally used to treat infections such as brucellosis and endocarditis. As for TB, when treating these infections, streptomycin should be used in combination with another antibiotic to help prevent resistance occuring.
DEFINITION of 'Oil Shale'. A type of sedimentary rock composed chiefly of a combination of silt and clay. Shale may contain kerogen, a type of organic matter that yields oil and gas.
Oil shale and tar sands are ancient fossil deposits containing petroleum that, with significant energy, can be converted into transportation fuels. 1  Oil shale is not oil, but a rock that contains a compound called kerogen. 2  It has been calculated that, per ton, oil shale contains one-tenth the energy of crude oil.