An Act to amend section 4161 of title 18, United States Code, relating to computation of good time allowances for prisoners.
PL 86-259 (S.1645), enacted 09/14/1959

546 
PUBLIC LAW 86-258-SEPT. 14, 1959 
[73 ST A T . 
EFFECTIVE DATE OF AMENDMENTS 
SEC. 707. The amendments made by this title shall take effect sixty 
days after the date of the enactment of this Act and no provision of 
this title shall be deemed to make an unfair labor practice, any act 
which is performed prior to such effective date which did not con-
stitute an unfair labor practice prior thereto. 
Approved September 14, 1959. 
Public Law 86-258 
September 14, 1959 
A N 
A C T 
^^' ^^^^1 
To authorize the appointment of a commissioner for Grand Canyon National 
Park, Arizona. 
Grand 
C a n y o n 
N a t i o n a l 
Park, 
Ariz. 
Appointment 
o f 
commissioner. 
Petty 
trial. 
62 Stat. 684 
62 Stat. 831. 
Salary. 
Be it enacted hy the Senate and House of Representatives 
of the 
United States of America in Congress assembled^ That the United 
States District Court for the District of Arizona shall appoint a 
special commissioner for the Grand Canyon National Park, Arizona. 
The commissioner shall hold office for four years, unless sooner 
removed by the district court, and he shall be subject to the general 
laws and requirements applicable to United States commissioners, 
offenses, 
g^Q 2. The jurisdictiou of the commissioner in adjudicating cases 
brought before him shall be limited to the trial, and sentencing upon 
conviction, of persons charged with the commission of those misde-
meanors classified as petty offenses (18 U.S.C. 1) relating to the vio-
lation of Federal laws or regulations applicable within the park: 
Provided^ That any person charged with a petty offense may elect to be 
tried in the district court of the United States; and the commissioner 
shall apprise the defendant of his right to make such election, but 
shall not proceed to try the case unless the defendant, after being so 
apprised, signs a written consent to be tried before the commissioner. 
The exercise of additional functions by the commissioner shall be con-
sistent with and be carried out in accordance with the authority, laws, 
and regulations of general application to United States commis-
sioners. The rules of procedure set forth in title 18, section 3402, of 
the United States Code, shall be followed in the handling of cases by 
such commissioner. 
The probation laws shall be applicable to persons 
tried by the commissioner and he shall have power to grant probation. 
SEC. 3. The commissioner shall receive an annual salary to be fixed 
by the district court with the approval of the Judicial Conference of 
the United States and shall account for all fees, fines, and costs col-
lected by him as public moneys. He shall reside within the boundary 
of the park or at some place reasonably adjacent thereto designated by 
the Secretary of the Interior with the approval of the district court. 
Approved September 14, 1959. 
Public Law 86-259 
September 14, 1959 
[S. 1645] 
AN ACT 
To amend section 4161 of title 18, United States Code, relating to computation 
of good time allowances for prisoners. 
62 Stat. 853. 
Be it enacted hy the Senate and House of Representatives 
of the 
United States of America in Congress assembled, That the first para-
graph of section 4161 of title 18, United States Code, is amended by 
striking out the words "to be credited as earned and computed 
monthly". 
Approved September 14, 1959.