Calibre Mining Further Expands Gold-Silver Vein Systems and Discovers New Zone at Eastern Borosi Project, Northeast Nicaragua

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Sept. 15, 2016) - Calibre Mining Corp. (TSX VENTURE:CXB) (the "Company" or "Calibre") is pleased to announce the third set of results from the 2016 drilling program on the Eastern Borosi Project, Nicaragua which is being funded by Calibre's partner IAMGOLD Corporation ("IAMGOLD").

Highlights

• Drilling to date in 2016 consists of 30 diamond drill holes for a total of 6,008 metres, with results for 8 new holes reported in this news release

• A step out hole on the East Dome Structure has intersected 15.35 metres grading 1.21 g/t gold and 120.9 g/t silver, including 3.00 metres grading 3.61 g/t gold and 348.7 g/t silver, and a second step out hole intersected of 16.50 metres grading 2.27 g/t gold and 127.9 g/t silver, including 3.38 metres grading 9.64 g/t gold and 404.4 g/t silver

• The first drilling on the Veta Loca gold target has intersected 6.31 metres grading 10.15 g/t gold and 6.9 g/t silver, including 0.79 metres grading 46.20 g/t gold and 10.5 g/t silver

• Diamond drilling of the Blag Gold-Silver Vein System continues to extend the defined mineralization at the Main Blag Structure with an intercept of 6.23 metres grading 2.60 g/t gold and 10.5 g/t silver

Recent Drill Highlights from Eastern Borosi Gold-Silver Project

Hole ID	Target	From m	To m	Length (m)	Au (g/t)	Ag (g/t)	Pb (ppm)	Zn (ppm)
BL16-042	Main Blag	307.77	314.00	6.23	2.60	10.5	5,346	9,228
BL16-043	East Dome	97.65	113.00	15.35	1.21	120.9	53	74
including	East Dome	110.00	113.00	3.00	3.61	348.7	93	78
BL16-044	East Dome	194.00	210.50	16.50	2.27	127.9	620	414
including	East Dome	206.17	209.55	3.38	9.64	404.4	2,868	1,222
GP16-046	Veta Loca	88.00	94.31	6.31	10.15	6.9	17	53
including	Veta Loca	88.00	88.79	0.79	46.20	10.5	77	57

Notes:	- Intervals are core lengths / true width are estimated to be 70-80% of lengths
	- Length weighted averages from uncut assays.

IAMGOLD Option - Eastern Borosi Project