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.
Shale is a sedimentary rock; fine grained, thinly bedded rock, largely formed by hardened clay, mud, and silt; splits into thin layers; it is used in cement and bricks. It is also used in concrete block, structural concrete, and highway surfacing.