By Jeremy Clarke
ASMARA, Oct 7 (Reuters) – Three Eritreans working for Australian company Chalice Gold Mines Limited (CHN.AX) have been killed in a shooting incident in the Red Sea state, the company said in a statement on Wednesday. Such violent deaths, uncommon in Eritrea, are likely to raise concerns among foreign investors in an industry many see as a lifeline to its agriculture-based economy, weakened by the global economic downturn and at the mercy of irregular rainfall.