Sept 5 (Reuters) - Yamana Gold Inc YRI.TO :
* YAMANA GOLD INC - INCREASES RESERVE GRADE, SIGNIFICANTLY INCREASES RESERVES AND ANNOUNCES FURTHER POSITIVE EXPLORATION RESULTS AT JACOBINA MINE
* YAMANA GOLD INC - FROM YEAR-END 2017, OVERALL MINERAL RESERVE GRADE HAS INCREASED BY 5.3%
* YAMANA GOLD - MID-YEAR MINERAL RESERVE AND MINERAL RESOURCE ESTIMATES FOR JACOBINA MINE WITH MINERAL RESERVES OF 2,279,000 OUNCES OF GOLD
* YAMANA GOLD - IMPROVEMENT IN MINERAL RESERVES, RESERVE GRADE IN MID-YEAR UPDATED MINERAL RESERVES AT JACOBINA SUPPORTS ANNUAL GOLD PRODUCTION
* YAMANA GOLD INC - IMPLEMENTATION OF PHASE 1 EXPANSION REMAINS AHEAD OF SCHEDULE AT JACOBINA MINE