An Act to authorize the disposal of magnesium from the national stockpile
PL 90-604 (H.R.5785), enacted 10/18/1968

82 STAT. ] 
PUBLIC LAW 90-605-OCT. 18, 1968 
1187 
NONINTERrERENCE W I T H OTHER FEDERAL AGENCIES 
SEC. 4. The amendments made by section 2 of this Act shall not be 
construed as superseding or limiting the functions, under any other 
provision of law, of any officer or agency of the United States. 
Approved October 18, 1968. 
Public Law 90-603 
AN ACT 
To amend title 37, United States Code, to clarify the conditions under whieh 
physicians and dentists who extend their service on active duty in a uniformed 
service may l)e paid continuation pay. 
Be it enacted hy the Senate and House of Representatives 
of the 
United States of America in Congress assembled^ That section 311 
(a) (2) of title 37, United States Code, is amended to read as follows: 
"(2) has completed his initial active duty obligation; and". 
SEC. 2. The amendment made by this Act becomes effective as of 
January 1,1968. 
Approved October 18, 1968. 
October 18, 1968 
[S.4158] 
Armed Forces. 
Physicians and 
dentists, duty ex-
tension. 
81 Stat. 651. 
Effective date. 
Public Law 90-604 
AN ACT 
To authorize the disposal of magnesium from the national stockpile. 
October 18, 19 68 
[H. R. 5785] 
Be it enacted hy the Senate and House of Rep'reseritatives of the 
United States of America in Congress a^senMed, That the Adminis-
trator of General Services is hereby authorized to disi>ose of, by ne-
gotiation or otherwise, approximately fifty-five thousand short tons 
of magnesium now held in the national stockpile established pur-
suant to the Strategic and Critical Materials Stock Piling Act (50 
U.S.C. 90-98h). Such disposition may be made without regard to the 
provisions of section 3 of the Strategic and Critical Materials Stock 
Piling Act: Provided, That the time and method of disposition shall 
be fixed with due regard to the protection of the United States against 
avoidable loss and the protection of producers, processors, and con-
sumers against avoidable disruption of their usual markets. 
Approved October 18, 1968. 
Magnesium. 
Disposal. 
60 Stat. 596. 
50 u s e 98 note. 
Public Law 90-605 
AN ACT 
To amend the Act of August 9, 1955, relating to certain common carrier opera-
tions in the District of Columbia. 
October 18, 1968 
[H. R. 18248] 
Be it enacted hy the Senate and House of Representatives 
of the 
United States of A^nerica in Congress assemhled^ That section 2 of the 
Act entitled "An Act to provide for the regulation of fares for the 
transportation of schoolchildren in the District of 
Columbia", 
approved August 9, 1955 (D.C. Code, sec. 44-214a), is amended to 
read a.s follows: 
"SEC. 2. In the case of any common carrier required to furnish trans-
portation to schoolchildren at a reduced fare under this Act, the Wash-
D.C. 
Schoolchildren, 
fares. 
76 Stat. 113. 
1188 
PUBLIC LAW 90-606-OCT. 18, 1968 
[82 STAT. 
ington Metropolitan Area Transit Commission shall certify to the 
Commissioner of the District of Columbia, with respect to each calen-
dar month commencing with September 1968, and ending August 
1971, all inclusive, an amount which is the difference between the total 
of all reduced fares paid during such calendar month to jsuch carrier by 
schoolchildren in accordance with this Act and the amount which 
would have been paid during that month to such carrier if such fares 
had been paid at the lowest adult fare established by the Commission 
for regular route transportation in that month. The certification 
required by this section shall be made for each such month as soon a^ 
practicable following the end thereof. The Commissioner of the Dis-
trict of Columbia, upon receiving any such certification, shall pay the 
carrier with respect to which that certification was filed an amount 
equal to the amount contained therein." 
Approved October 18, 1968. 
Public Law 90-606 
October 18, 19 68 
A N 
A C T 
[H. R. 551] 
r
p
Q authorize the establishment of the Biscayne National Monument in the State 
cf Florida, and for other purposes. 
Be it enacted hy the Senate and House of Rejyresentatives of the 
Biscayne 
United States of America in Congress assembled. That, in order to 
National Monu- 
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ment, Fia. 
preserve and protect tor the education, inspiration, recreation, and 
Establishment, eujoymeut of present and future generations a rare combination of ter-
restrial, marine, and amphibious life in a tropical setting of great 
natural beauty, the Secretary of the Interior may establish the Biscayne 
]S ational Monument within so much of the area in the State of Florida 
as generally depicted on the drawing entitled "Biscayne National 
Monument Boundary Map," numbered NM-BIS 7101, and dated 
May 1966, which drawing is superimposed on a photographic repro-
duction of a portion of Coast and Geodetic Survey Chart Numbered 
1249 (eighth edition, December 20,1965, correction numbered 22, dated 
May 28,1966) as lies north of the north boundary of the channel ease-
ment shown thereon. The drawing shall be on file and available for 
public inspection in the offices of the National Park Service, Depart-
ment of the Interior. The Secretary may revise the boundaries of the 
national monument from time to time, but the total acreage of the 
national monument shall not exceed ninety-six thousand three hundred 
acres and no boundary shall be revised outward or in such a manner as 
to obstruct any seaport channel which may be hereafter constructed 
outside the boundaries hereinbefore referred to. 
Land acquisi- 
gj,Q 2. (a) Within the boundaries of the Biscayne National Monu-
ment, the Secretary of the Interior may acquire lands, waters, or 
interests therein by donation, purchase with donated or appropriated 
funds, or exchange. The Secretary may in addition acquire by any of 
the above methods not more than eighty acres of land or interests 
therein on the mainland for a headquarters site, and not more than 
forty acres of land or interests therein on Key Largo for a visitor 
contact site. 
(b) When acquiring property by exchange the Secretary may accept 
title to any non-Federal property within the boundaries of the national 
monument, and outside of such boundaries within the limits prescribed 
in subsection (a) of this section, and in exchange therefor he may 
convey to the grantor of such property any federally owned property 
under his jurisdiction in the State of Florida which he classifies as 
tion