compressed air at Hok Un Quarry was satisfactorily provided from two "Broomwade" Type E 600 cu. ft. per min. 4 cylinder stationary compressors supplied prior to 1939 and reconditioned in 1947.
206. The following table shows the steady increase in the output of crushed stone which has been achieved:
Crushed Stone (tons) Bitumen Macadam (tons) Quarry 1950/51 1951/52 1952/53 1950/51 1951/52 1952/53 Hok Un 46,776 60,203 92,521 32,233 22,885 23,656 Morrison Hill (a) 29,887 11,626 Hung Shui Kiu (b) 6,670 2,229 Tsat Tze Mui (c) 29,506 88,646 10,537 25,339 Total ... 53,446 91,938 181,167 62,120 45,048 48,995(a) Closed down in September, 1951. Quarry was operated by contract, mixing plant only operated by Roads Office.
(b) Closed in August, 1951.
(c) Started full production in September, 1951.
207. The dust nuisance at Tsat Tze Mui Quarry, sited in the popular North Point residential district, was mentioned in last year's report and all efforts to eliminate this nuisance failed. In the public interest it was therefore decided that a new quarry site was necessary and investigations into alternative sites were made, in consequence of which a site at the head of the Tai Hang Valley, Mt. Butler, approximately 4 miles from the city centre was provisionally selected. Work then started on the detailed surveys, lay-out plans and estimates for the proposed new quarry with an adequate production capacity based on an 8 hour working day.
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