Sté Anonyme Chérifienne d'Etudes Minières (Sacem) is a provider of products and services such as antimony ores and minerals,barium ores and minerals,bismuth ores and minerals,caesium ores and minerals,cerium and thorium ores and minerals,copper ores and minerals,lead ores and minerals,mercury ores and minerals,tin ores and minerals,zinc ores and minerals,ore concentrates, heavy metal,ores, heavy metal, sintered,caesium,polysulphides,phosphorus, elemental, processed,phosphorus chlorides,phosphorus iodide,phosphorus pentoxide/phosphorus anhydride,phosphorus sulphides,phosphorus sulphochloride,phosphorus tribromide,polyphosphates nes,phosphorus compounds nes,salts of phosphonic acid (phosphonates),sulphur, elemental, processed,sulphur, pure,sulphur oleate,sulpho-halogenic derivatives,sulphur compounds nes,sulphamates, metallic, nes,carbon and derivatives,charcoal and derivatives,carbon disulphide,carbon fluoride,carbon oxychloride/carbonyl chloride/phosgene,carbon oxysulphide,carbon sulphides,carbon compounds nes,silicon, elemental,silicon, pure,silicon acetate,silicon carbide,silica/silicon dioxide, silicic anhydride,silicon hydrate,silicon hydrides, silane,silicon monoxide,silicon nitride,silicon tetrachloride,silicon tetrafluoride,silicon compounds nes,caesium alum,caesium bromide,caesium carbonate,caesium chloride,caesium chromates,caesium dioxide,caesium fluoride,caesium iodide,caesium nitrate,caesium sulphate,caesium salts nes,caesium compounds nes,inorganic phosphorus carbon, silicon and caesium compounds, pure.