EMM has been severely underpriced since landing that $4m order. It's not just the size of the order that's important, it's important because it is for a primary extraction silver system.
EMM have a safer more efficient system than the 'old' tech Merrill-Crowe, which have been the industry standard since yonks ago.
This latest order followed on from Macmins silver extraction system, which is quite small compared to the newest order for Bolnisi.