sets of lease plans, 83 sets of surrender plans and 3,896 sets of plans for permits.
170. The photographic and reproduction section produced over 100,000 prints by copycat, ammonia, deltaline, etc.; the section also took 4,000 photographs and printed 20,000 photoprints.
171. Sales of survey sheets and plans realized $8,708.
172. The plans of the Central District, the Peak and the Harbour Map were revised, redrawn, and reproduced in colour, and a map of the Colony at a scale of 1/100,000 was drawn and printed in 8 colours.
DEVELOPMENT OFFICE
Chief Engineer (Acting),
Mr. F. R. WHITEHEAD, B.Sc. (Hons.), A.M.I.C.E.
GENERAL
173. The creation of a post of Chief Engineer and other staff increases brought the total authorized establishment to 104.
174. The work of this office falls into two main categories: planning and investigation of major development schemes and the formation of undeveloped areas to provide sites for housing, industry and community purposes.
PLANNING AND INVESTIGATIONS
175. Following the issue of a revised feasibility report on Waterloo Road Hill setting down firm proposals for developing this barren, eroded hill into sites for hotels, high class residences and schools, the preparation of contract documents commenced for the first of the proposed three stages. This first stage will produce about 209,000 square feet of saleable land.
176. Work continued on the specialist contract let the previous year for subsoil investigations by penetration boring. Details of the bores which totalled nearly 28,000 feet in depth are as follows:
Location No. of Bores Total depth in feet Ho Man Tin 194 8,126 Lai Chi Kok/O Pui Shan 153 6,603 Tai Po Road/Castle Peak Road Link Kwun Tong 38 1,263 93 4,362 Kwan Mun Hau and Ho Pui Village Resite Areas, Tsuen Wan 91 Area No. 1, Kowloon Foothills Road 22 3,541 90 4,000 659 27,89538