(Brotherhood of Railroad Signalmen
 PARTIES TO DISPUTE:
 (The Ann Arbor Railroad Company

(a) Carrier violated the current Signalmen's Agreement as amended particularly the Scope, when, on October 23, 1968, it required and/or permitted persons not covered by the Signalmen's Agreement to perform work in connection with the installation of annunciators at Pontiac Trails and Coon Lake Road.

 (b) Carrier should now be required to compensate Signal Maintainer G. D. Harris for eight hours at the straight-time rate of pay because of this violation.

 OPINION OF BOARD: The dispute herein involves the installation of annuncia
 tors at the locations named, which, the Petitioner states,
 were installed to notify the dispatcher of the presence of trains at those
 locations. The Petitioner states, without refutation by the Carrier, that the
 annunciator apparatus and circuitry were installed in the highway crossing
 relay signal cases; that the installation includes a repeater relay which is
 operated by energy obtained from the crossing installation, and which is con
 trolled by a circuit attached to the flasher control relay, and that it also
 includes equipment which operates through circuits which break through contacts
 in the repeater relay, all of which, i.e., the source of energy, relays and
 circuitry is installed and maintained by Signal Department employes.

 The Carrier maintains that the annunciator is a communication device, the installation of which properly belongs to employes of the communication's craft to install and connect to the service that activates it.

 The record shows that notice of pendency of the dispute was given to the International Brotherhood of Electrical Workers. That organization responded, quoting the classi has cited no specific language of the rules to support its assertion that the work should properly have been assigned to electrical workers, nor has it submitted any evidence in

                  Docket Number SG-18736


From our study of the record, we are convinced that the Signalmen's Organization is correct in its position that the installation of the annunciator apparatus should ha dividing line between Signalmen's work and Communication Employe's work should be where the annunciator circuit is attached to the communication circuit on the pole lin
        The claim will be sustained.


        FINDINGS: The Third Division of the Adjustment Board, upon the whole record and all the evidence, finds and holds:


        That the parties waived oral hearing;


That the Carrier and the Employes involved in this dispute are respectively Carrier and Employes within the meaning of the Railway Labor Act, as approved June 21, 1934;

 That this Division of the Adjustment Board has jurisdiction over the dispute involved herein; and

        That the Agreement was violated.


                      A W A R D


        Claim sustained.


                          NATIONAL RAILROAD ADJUSTMENT BOARD

                          By Order of Third Division


        ATTEST: Executive Secretary


Dated at Chicago, Illinois, this 30th day of June 1972.

 ·.1