to a record output of crushed stone. Dust suppression equipment was installed at the Diamond Hill Government Quarry.
6.65. Future requirements of quarry products forecast from the five-year programmes of Civil Engineering and Highways Offices indicated a need to expand the production capacity of the Government quarries and consideration was being given to ways in which this might be done.
Private Quarries
6.66. One of the five private quarries operated on Government contracts was taken over by the contractors for the Cross Harbour Tunnel and its output was no longer available to the rest of the construction industry. Of the other four contract quarries, three installed new plant and increased production while the fourth was already working at maximum output. At the end of the year a new contract for a quarry in the New Territories was let and the investigations for a contract quarry site on Hong Kong Island were successfully completed.
6.67. Six quarries operated on short-term permits were closed leaving only nine still in production at the end of the year. At four of these quarries blasting was restricted because of the proximity of other buildings but output from all increased to meet the high demand for aggregates. Some of these quarries were also importing, for crushing, stone from construction works where rock was being extracted in levelling building sites. Aggregates produced from similar rock crushed in plants installed on construction sites were also contributing to the improvement in aggregate supplies.
Sand Monopoly
6.68. A new three-year contract for collection of sand was let in July and as a consequence of increased contract prices, the sale price of sand had to be increased on 14th August from $11.00 to $16.50 per cubic yard.
6.69. There are six sand-selling depots, one in Hong Kong, two in Kowloon and three in the New Territories. These depots were open for business on 354 days during the year. In addition to the selling depots, there are two sand storage sites on Hong Kong Island and two in Kowloon. One of these was cleared during the year and vacated in October.
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to a record output of crushed stone. Dust suppression equipment was installed at the Diamond Hill Government Quarry.
6.65. Future requirements of quarry products forecast from the five-year programmes of Civil Engineering and Highways Offices in- dicated a need to expand the production capacity of the Government quarries and consideration was being given to ways in which this might
be done.
Private Quarries
6.66. One of the five private quarries operated on Government con- tracts was taken over by the contractors for the Cross Harbour Tunnel and its output was no longer available to the rest of the construc- tion industry. Of the other four contract quarries, three installed new plant and increased production while the fourth was already working at maximum output. At the end of the year a new contract for a quarry in the New Territories was let and the investigations for a contract quarry site on Hong Kong Island were successfully completed.
6.67. Six quarries operated on short-term permits were closed leaving only nine still in production at the end of the year. At four of these quarries blasting was restricted because of the proximity of other buildings but output from all increased to meet the high demand for aggregates. Some of these quarries were also importing, for crushing, stone from construction works where rock was being extracted in levelling building sites. Aggregates produced from similar rock crushed in plants installed on construction sites were also con- tributing to the improvement in aggregate supplies.
Sand Monopoly
6.68. A new three-year contract for collection of sand was let in July and as a consequence of increased contract prices, the sale price of sand had to be increased on 14th August from $11.00 to $16.50 per cubic yard.
6.69. There are six sand-selling depots, one in Hong Kong, two in Kowloon and three in the New Territories. These depots were open for business on 354 days during the year. In addition to the selling depots, there are two sand storage sites on Hong Kong Island and two in Kowloon. One of these was cleared during the year and vacated in October.
77
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