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except such purchases shall be made from, or such dealings shall
be with, the bidder whose bid is the most favorable to such
common carrier, to be ascertained by competitive bidding under
regulations to be prescribed by rule or otherwise by the Interstate
 Commerce Commission. No bid shall be received unless the
name and address of the bidder or the. names and addresses of
the officers, directors and general managers thereof, if the bidder
be a corporation, or of the members, if it be a partnership or
firm, be given with the bid.
Any person who shall, directly or indirectly, do or attempt to
do anything to prevent any one from bidding or shall do any
act to prevent free and fair competition among the bidders or
those desiring to bid shall be punished as prescribed in this
section in the case of an officer or director.
Every such common carrier having any.such transactions or
making any such purchases shall within thirty days after making
the same file with the Interstate Commerce Commission a full
and detailed statement of the transaction, showing the manner of
the competitive bidding, who were the bidders, and the names
and addresses of the directors and officers of the corporations
and the members of the firm or partnership bidding ; and whenever
the said commission shall, after investigation or hearing, have
reason to believe that the law has been violated in and about
the said purchases or transactions it shall transmit all papers and
documents and its own views or findings regarding the transaction
to the Attorney General.
Íf any common carrier shall violate this section it shall be
fined not exceeding $ 25.000: and every such director, agent,
manager or officer thereof who shall have knowingly voted or
directed the act constituting such violation or who shall have
aided or abetted in such violation shall be deemed guilty of a
disdemeanor and shall be fined not exceeding $ 5000.— or confined
 in fail not exceeding one year, or both, in the discretion of
the court.

Sec. 11. Authority to enforce compliance with sections two,
three, seven and eight of this Act by the persons respectively
subject thereto is hereby vested: in the Interstate Commerce
Commission where applicable to common carriers, in the Federal
Reserve Board where applicable to banks, banking-associations