" The Exploration Concession agreement requires Eastern Mining...

"
The Exploration Concession agreement requires Eastern Mining to commence the exploitation of ore before 25 May 2020. In the event that Eastern Mining fails to begin exploitation before 25 May 2020 the Government of Zenica-Doboj Canton can terminate the Exploration Concession."
Dude the key word is concession.
"The Exploration Concession covers two main advanced polymetallic projects located near the town of Vareš, which is approximately 50km north by sealed road from Sarajevo, the capital city of Bosnia & Herzegovina. Both the Veovaca and Rupice Projects have had varying degrees of historical exploration and exploitation, and several prospects within the existing Exploration Concession and in the nearby region also indicate encouraging signs warranting further exploration."
If they commence production at Veovaca they have commenced production at the exploration concession. This includes Rupice.
http://www.adriaticmetals.com/projects-overview/