9.31. Mount Butler was able to meet all demands made upon it for quarry products, but Hok Yuen, owing to the heavy demands for bituminous road mixture, was unable to satisfy all demands for aggregates for other works.
9.32. The Quarry Section continued to be responsible for the supervision of private quarries on contract, the giving of technical advice on private quarries on permit and prescribing special conditions to Dangerous Goods Licences in connexion with site formation work involving blasting.
TRENCHES
9.33. In January, an engineer was appointed to deal with all matters relating to the opening and reinstatement of trenches throughout the Colony.
Regular inspections of all trench openings were carried out with a view to ensuring that they were properly lighted, guarded and backfilled and that both vehicular and pedestrian traffic were not unduly obstructed. Where infringements of regulations were observed, the necessary instructions and guidance were given. Meanwhile, arrangements for the speedy and proper execution of reinstatement works to all backfilled trenches were made.
9.34. In order that there would be better co-ordination on all road works, companies were invited to send representatives to the Road Opening Co-ordinating Committee meetings.
9.35. The number of Road Opening Permits issued were:
Island Mainland Total Utilities 1,207 748 1,955 Government Sub-departments 474 521 995 2,9509.36. A total of $2,470,082 was spent on trench reinstatement works, $858,387 for the Island and $1,611,695 for the Mainland.
TRAFFIC ENGINEERING SECTION
Chief Engineer:
J. R. WHITAKER, M.A., A.M.I.C.E., M.I.Mun.E., A.M.I.T.E.
GENERAL
9.37. In the second full year since inception, the Traffic Engineering Section continued with its primary aim of providing for the safe and
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