May 22 (Reuters) - Chatham Rock Phosphate Ltd CRP.NZ
* second halted phosphate shipment highlights nz supply risk
* notes halting of a second phosphate shipment from western sahara is intensifying supply risk for new zealand farmers
* proposes to extract up to 1.5 million tonnes year of phosphate nodules from top half metre of sand on identified parts on chatham rise Source text for Eikon: ID:nNZW70FqzR Further company coverage: CRP.NZ