RE:M & A in CanadaExcelsior's copper mine is in-situ, not open pit. Excelsior (MIN, EXMGF) is waiting for it's final permit from the EPA (underground injection control permit) which is expected within weeks if not days. The draft EPA UIC permit was issued in October 2017 and the public comment period has closed.
The $30 million you refer to was to advance Excelsior's Gunnison project and is not available for forays into Chile. In fact, they are going to need at least another $50 million more, possibly $70 million, for the development of the well field and the SXEW plant at the Johnson Camp.
While the Greenstone involvement in both companies is interesting, don't count on Excelsior merging with anyone for the foreseeable future.
As always, this is my personal opinion. Everyone is urged to do their own due diligence.