Emory Williams, who was one of the largest individual shareholders of ERA, said he was “shocked, dismayed and surprised” by Caterpillar's claim allegations that accounting misconduct took place before the deal closed.
Canadian coal company HD Mining has sent some of its Chinese workers back to their home country following a court battle with unions in British Columbia
Researchers from the USA and Hungary are developing solar cells capable of record-breaking levels of efficiency via the manipulation of nano-particles.