D—4

Tuai-Kaitawa.—The construction of this line was completed towards the latter part of the year with the wiring of the last span. Completion of it had been held up pending erection of the Kaitawa structure and the cessation of blasting-operations in the vicinity. Lines Radiating from, Bunnythorpe Substation.—The surveys of the deviations to four radiating lines necessary to bring them into the new Bunnythorpe Substation were made. (c) 50 hV. Lines Maungatapere-Dargaville.—A preliminary reconnaissance has been carried out. Arapuni-Maraetai.— The line was put into service on 31st May, 1946. Maraetai-Whakamaru.—The line was completed and was put into service at 11 kV. in October, 1946. Whakamaru-Taupo.—A reconnaissance was made of a route for a proposed line to Huka Falls. Bombay-Waiuku.—The line was livened in May, and was put into service on 6th June, 1946. Tuai-Gisborne. —A survey was made to deviate a section of the line at Waerenga-o-kuri which, was subsiding through heavy rains and flooding. The fitting and erection of poles was commenced. Tuai-Wairoa. —Six poles and 270 chains of 19/-064 copper cable were used in a deviation to the new Wairoa Substation. (d) General Mangaparo 230-volt Reticulation. —Service lines were erected, and supply to eight domestic consumers was commenced on Ist May, 1946. Maraetai Reticulation.—Four and three-quarter miles of 11 kV. lines were erected to supply the construction works, village, and sawmill. Service lines have been run to 180 houses. At Mareretu a survey was made of a dam-site for a permanent water-supply. Surveys are being undertaken by the Public Works Department for extending the town watersupply to the substation at Kaikohe. 4. Communications Arapuni-Hamilton Telephone-line.—The Karapiro-Hamilton section was completed in October and two circuits were put into service, one of them being connected to the Arapuni-Karapiro section of the old line. The Karapiro-Hamilton section of the old line has been dismantled. On the Arapuni-Karapiro section all poles have been erected for the new line and wiring is in progress, about 3J miles being completed. Maraetai-Arapuni Telephone-line.—Pole-erection and wiring is proceeding. Wiringwas completed to Arohena and the Arohena Camp was connected to the Arapuni Exchange. Channel Carrier System.—ln conjunction with the major overhaul of the telephoneline from Khandallah to Arapuni via Stratford preparatory to carrier-current working, new transposition designs have been worked out and put into service and new panels with carrier filters have been put into all huts as far north as Pohokura. The terminal

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