Okla. Stat. tit. 60, § 60-73: Trustee's authority to invest income from royalties -

Payments to life tenant or other person.

Under proper court order the trustee shall be authorized to

invest income from royalties pursuant to the provisions of the

Oklahoma Uniform Prudent Investor Act, unless otherwise provided by

law, which investments shall remain intact until the ultimate taker

is determined and shall then be paid over to the ultimate taker and

the trust closed. Income from investments shall be paid to the life

tenant or other person entitled thereto.