March 31 (Reuters) - Primero Mining Corp P.TO :
* Primero closes extension to revolving credit facility
* Primero Mining Corp says Primero drew down $10 million from revolving credit facility, which now has $60 million drawn
* Primero Mining Corp says an additional $15 million remains available for drawdown under the revolving credit facility Source text for Eikon: ID:nCCN7ts08h Further company coverage: P.TO