http://schemas.bs8723.org/Examples/ExampleCompounds/ en 2007-05-24 coal 2007-05-24 4 8 2007-05-24 mining 2007-05-24 4 C09 2007-05-24 austenitic steel 2007-05-24 3 C10 2007-05-24 chromium steel 2007-05-24 3 C10 2007-05-24 manganese steel 2007-05-24 3 C10 2007-05-24 opencast mining 2007-05-24 8 C02 2007-05-24 steel 2007-05-24 C05 C06 C07 austenitic chromium manganese steel 2007-05-24 5 6 7 coal mining 2007-05-24 1 2 opencast coal mining 2007-05-24 1 9