Fifty jewellers...have pledged to boycott Anglo American's planned Pebble project in Alaska, saying they will not use gold from the...mine...Earthworks, a non-profit group...says...the project – a partnership between Anglo and Canada's Northern Dynasty Minerals – "would...jeopardise...the livelihoods of the Alaska native communities..." The jewellers' pledge is backed by the likes of Tiffany & Co, Goldsmiths, Mappin and Webb,...John Hardy, Fraser Hart, Ingle & Rhode and Boucheron...Fraser Hart's chief executive, Noel Coyle [said]..."in some areas, mining of precious metals presents too great a risk to communities and the environment"...[Anglo American] says it will not build the mine if it is not supported by the local community...the miner promises an independent process, run by the...not-for-profit Keystone Centre for Science & Public Policy...[also refers to BP, Rio Tinto, Shell, Vedanta]