Skeena's proposed Eskay Creek gold-silver project, which is located in Tahltan territory, will be the first mining project to have permits authorized by an indigenous government.
The company is modifying operations while it awaits the results of its appeal to an order to stop drawing water from the Lagunillas aquifer for 90 days.
The state said the new law is the only Aboriginal heritage legislation in Australia to require that Aboriginal people give "informed consent" for agreements.
The policy identifies five key areas of action that will support a continuously evolving reconciliation action plan: engagement, empowerment, environment, employment, and education.