1890                                       Vetoes

immediately after Section 12.402.1 thereof and to be under the same
title, subtitle and subheading providing new standards for determin-
ing what exhaust emissions are prohibited; providing for the pro-
hibition of smoke from motor vehicles under certain conditions;
PROVIDING CERTAIN EXCEPTIONS; providing for the prohibi-

tion on running motor vehicle engines under certain conditions; and

providing enforcement procedures.

May 28, 1971.

Honorable William S. James
President of the Senate
State House
Annapolis, Maryland 21404

Dear Mr. President:

In accordance with Article II, Section 17, of the Maryland Con-
stitution, I have today vetoed Senate Bill 521.

This bill prohibits certain smoke emissions from motor vehicles.
House Bill 533, which was enacted by the General Assembly and signed
by me on May 24, 1971, is similar to Senate Bill 521 and accomplishes
the same purpose. Therefore, it is unnecessary for me to sign Senate
Bill 521.

Sincerely,

/s/ Marvin Mandel,
                                                 Governor.

Senate Bill No. 527—Workmen's Compensation for Firefighters

AN ACT to add new Section 103 64A to Article 101 of the Anno-
tated Code of Maryland (1970 Supplement), title "Workmen's Com-
pensation," SUBTITLE "MISCELLANEOUS," to follow immediately

after Section 103 64 thereof and to be under the new subtitle "Death

and Disability Payments—Fire Fighters," to establish certain medi-
cal conditions where the death or disability of a fire fighter is
presumed to be accidental and as a result of his employment.
COMPENSABLE UNDER THIS ARTICLE AND CONCERNING
RETIREMENT BENEFITS FOR DISABLED FIRE FIGHTERS.

May 28, 1971.

Honorable William S. James
President of the Senate
State House
Annapolis, Maryland 21404

Dear Mr. President:

In accordance with Article II, Section 17, of the Maryland Con-
stitution, I have today vetoed Senate Bill 527.

This bill provides that where impairment of a firefighter's health
is caused by certain enumerated diseases, such impairment is pre-
sumed to be compensable under the workmen's compensation laws.

House Bill 433, which was enacted by the General Assembly and
signed by me on May 24, 1971, accomplished the same purpose as