Mining companies with operations in the state back call for a parliamentary inquiry into climbing sexual assault and harassment allegations in the workplace.
Sundance Resources has filed for international arbitration saying Cameroon and Congo Republic have violated contracts by developing the iron project with Chinese investors.
Moscow wants to protect its defence and construction industries from further growth in raw materials costs as prices for metals rise at a global level.
MIT spinoff 247Solar developed a battery that uses silica sand and electric resistance coils to generate ultra-high temperature heat from clean energy sources.