A sound asset can still lose its economics.
By licence we mean the instrument the asset depends on: a mining licence, an exploration or production block, a production sharing contract or a concession. Its value rests on the rights granted or agreed, and on how they are administered.
A mine can have a flawless orebody, a competent operator and a signed offtake, and still lose its economics because a permit went unrenewed, a fiscal term was revised, or a code reform removed a stability guarantee.
A commercial petroleum discovery can lose its value if the exploration period is not extended, the development plan is not approved, acreage must be relinquished, or cost recovery and profit-oil terms are reopened after capital has been committed.
The exposure sits in the particular licence and contract: its renewal conditions, its stability clause, its work obligations and the decisions already taken under them.