The lessor hereby grants to the lessee, his heirs and assigns, the exclusive right to mine and produce from the following described land petroleum and natural gas, with possession of so much of such land as may be necessary for such purpose.
James E. Veasey,
Law of Oil and Gas,
Mich. L. Rev.
Available at: https://repository.law.umich.edu/mlr/vol18/iss8/4