640 LAWS OF MARYLAND. [CH. 310

ceedings as for contempt, as in the case of disobedience of
the requirements of a subpoena issued from such court
or a refusal to testify therein. Each officer who serves
such subpoena shall receive the same fees as a sheriff,
and each witness who appears, in obedience to a subpoena,
before the Commission, or a member, or its executive
Secretary, shall receive for his attendance the fees and
mileage provided for witnesses in civil cases in circuit
courts, which shall be audited and paid in the same manner
as other expenses are audited and paid, upon the presen-
tation of proper vouchers, approved by two members of
the Commission. No witness subpoenaed at the instance
of a party other than the Commission, or one of its mem-
bers, or its executive secretary, shall be entitled to com-
pensation unless the Commission shall certify that his
testimony was material to the matter investigated.

(c) To have access to and at all reasonable hours enter
any place where milk is being produced, transported, pro-
cessed, stored, bottled or sold. Such power may be exer-
cised by any member of the Commission, or any employee
designated for the purpose; and any such member or desig-
nated employee shall also have power upon order of the
Commission to inspect all books, papers, records or docu-
ments at any place within the State, for the purpose of
ascertaining facts to enable the Commission to administer
this Act; and in connection therewith to compel producers
and milk dealers to adopt a uniform system of record in
order to enable the Commission to secure, the necessary
information.

(d) To act as mediator and arbitrator in any contro-
versy or issue that may arise among or between producers
and dealers, or any other group in, this Act defined, par-
ticipating in the milk industry.

(e) To determine and designate any area of the State
as a natural marketing area, whenever such determina-
tion and designation may be requested, as provided in this
Section, to establish definite boundaries between markets
in order to secure uniformity, enforce the provisions and
effect the purposes of this Act.

(f) To appoint one or more advisory boards repre-
senting all phases of the industry affected, including pro-
ducers and distributors, to assist the Commission in the
performance of its duties. In case any such advisory board
shall consist of both producers and distributors the repre-
sentation of each class of members shall be equal. Pro-
ducers so appointed may or may not be duly authorized
officers of any one or more cooperative milk association,