JAKARTA, April 29 (Reuters) – Indonesia’s Coordinating Ministry for Maritime Affairs and Investment has rejected a proposal by nickel miners to allow the export of nickel ore again, the ministry’s spokesman, Jodi Mahardi, told Reuters on Wednesday. The Indonesian nickel miners’ association (APNI) proposed this month that the country allow exports of nickel ore to cushion the impact on processed nickel exports by global measures to control the coronavirus outbreak.