To mitigate risks to human health, environmental integrity, biodiversity, and property, the reclamation of mining sites is imperative. The previous Mining Act delineated two categories of reclamation: planned reclamation, conducted concurrently with mining operations, and unplanned reclamation, executed when planned reclamation was neglected or when unauthorized exploitation of mineral resources occurred. The revised Mining Act integrates inactive mining sites into the reclamation framework. These sites are characterized by the permanent cessation of mining activities without adequate safety measures to safeguard human health, property, biodiversity, and environmental quality, and they remain listed in the Register of Mining Sites. For inactive mining sites, two reclamation strategies are outlined: reclamation without exploitation and reclamation with exploitation. This study scrutinizes the inactive mining sites of solid mineral resources in the Republic of Croatia, as documented in the Unified Information System of Mineral Resources. Additionally, an overview of the updated Mining Act is presented, highlighting the newly established reclamation protocols for inactive mining sites and outlining the requisite procedures for their implementation.