304. The following table shows the output from the three quarries over the last five years:
Tsat Tsz Mui Hok Yuen Mt. Butler Total Crushed Stone (Tons) 53/54 54/55 55/56 56/57 57/58 97,583 103,457 100,353 89,953 84,980 105,331 103,409 113,287 *11,821 Bituminous Macadam (Tons) 53/54 54/55 55/56 56/57 57/58 Closed 21,326 24,826 30,352 22,107 Closed 98,089 26,938 25,107 30,166 32,212 37,303 †2,119 30,899 182,563 208,788 203,762 215,061 187,870 48,264 49,933 60,518 56,438 68,202* Commenced production in December.
† Commenced production in January.
WATERWORKS OFFICE
Waterworks Engineer, T. O. Morgan, B.Sc., A.M.I.C.E.
Assistant Waterworks Engineer, C. I. Wilks, A.M.I.C.E., M.I.W.E.
GENERAL
305. The demand for water again increased as a result of continued industrial expansion, the construction of numerous multi-storey buildings, and the necessity for supplying new resettlement estates.
306. Rainfall during the quarter ending 30th June was nearly twice the average, May being a particularly wet month. Consequently, by the end of May all reservoirs, excepting Tai Lam Chung, were overflowing. These early rains permitted the 5-hour supply period in force on April 1st to be increased to nine hours on May 10th. As the rainfall continued to exceed the average and most reservoirs were full or overflowing, a full supply was provided on May 22nd and maintained until July 28th when the hours were curtailed to sixteen. Further heavy rains, however, enabled a full supply to be reintroduced on 26th August and retained until 10th September. A 16-hour period was then imposed, but heavy rain again made it possible to eliminate restrictions and a 24-hour supply was given from 22nd September until 5th October. A reduction to sixteen hours daily was then made, followed by a further reduction to ten hours on October 14th. It was hoped to maintain the 10-hour supply period throughout the dry season, but owing to the early cessation of the rains the yield failed to come up to expectations and it became necessary to reduce the period to eight hours on January 27th. The usual full supply was given over the Chinese New Year and also at Christmas and New Year.
307. The two emergency pumping stations which proved so valuable last year became redundant with the advent of the heavy rains and with
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