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Three overhead travelling cranes, two of 100 tons and one of 50 tons lifting-capacity, are to be installed. At the rear of the building and over the five 16-ft.-diameter penstocks a large concrete platform has been planned to accommodate the transformer banks, circuit-breakers, and switches, also to provide facilities for transversing transformers to the workshop. Provision is being made on the roof for a bus-bar and air-break switching system and for a tall steel structure to support the outgoing lines to the outdoor station. Plans for a lift shaft, penthouse, and adits have been completed. This lift is being made to take up to twenty workmen and light materials from the top of the gorge to the access road, a drop of 193 ft., which saves one mile travel by road, and it will be a permanent installation. Combined with this is a cable shaft for control cables from the power-house to the outdoor station. Detailed design of the Tekapo Power-house neared completion as manufacturers' details came to hand, but the final foundation details will be done after excavation of the site. To install additional larger generating-units at Cobb requires an enlarged powerhouse twice the length of the present inadequate timber structure and of increased span and height with a travelling crane running the full length. Preliminary sketch plans were prepared to enable tenders to be called for machinery, and, working on estimated clearances, design proceeded on the structural frame. Plans for drainage and roading at Bunnythorpe 220 kV. substation were prepared in addition to plans and specification for the synchronous-condenser building and main control block, whilst a contract was let for ten cottages forming the initial housing units of the proposed village for the operating staff. Plans and specification were completed for switch-rooms at eight substations and for extensions to the load despatch office at Hamilton. Designs and drawings were completed and specifications prepared for a traverser track and turntable for Maraetai and Bunnythorpe to take 60-ton and 80-ton transformers respectively as well as a traverser track for Otahuhu to take 80-ton autotransformers. Plans were prepared for additional married accommodation at practically all stations as a result of increased staff. Various proposals for increase of Head Office staff accommodation were also prepared. (c) Electbical Section Power-stations. —The main design work for Maraetai included the layout of 220 kV. equipment and arrangement of cables. Tenders for control and protective equipment and 400 v. switchgear were analysed, and orders placed. Preliminary work was done on the power and lighting installation for Maraetai, whereas this design work for Tekapo is virtually complete. Specifications were drafted for two 14,000 b.h.p. turbines, two 10,000 kW. generators, and two 11,000 kYA. transformer banks for Cobb, whilst specifications are being prepared for the control equipment and 66 kV. structure. Inquiries were dealt with as erection work proceeded at Karapiro. Kaitawa design work was completed and drawings issued. A report was prepared on the acceptance tests for Highbank Station, work was done on Whakamaru Switching-station and Waitaki No. 5 unit, and minor matters concerning most other power-stations. General matters included a survey of existing power and lighting fittings with the object of standardization in future, a survey of the life of various types of station batteries, an inventory of equipment in test laboratories, and drafting specifications for sine-wave sets and standardized laboratory equipment. Substations. —Detailed design and layout drawings were well advanced for the 220 kV. substations at Otahuhu and Bunnythorpe, specification drawings being prepared for steel structures, insulators, hardware, 11 kV. switchgear, and miscellaneous equipment. Preliminary layout and structure drawings were prepared for the proposed 220 kV. substation at Haywards, and preliminary investigations made for a 220 kV. substation at Islington.

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