Nicaragua has granted a Chinese-owned company linked to one sanctioned by Washington the right to prospect and dig for gold across 262 sq km (101 sq miles) of rainforest, about a quarter the size of Hong Kong. The 25-year concession over the block, named Jade, went to Linze Excelente Mineria, a company that appeared in Nicaragua’s mining registry only last year. The block is in a corner of the country where prospectors first struck gold in 1880. Corporate filings list Lijun Dong as legal...