The Surface Mining Control and Reclamation Act of 1977 Coal, a major energy source for the Nation, must be mined before it can be used.
(The Surface Mining Control and Reclamation Act of 1977 Coal; must be mined; T:before it can be used) (it; can be used; )
The Surface Mining Control and Reclamation Act of 1977 Coal it
must be mined can be used
T:before it can be used