288. At both Quarries the primary crushing unit comprised two 24′′ × 13′′ Disc Crushers and a Pegson 16′′ × 5′′ granulator and those at Tsat Tze Mui were a Kubit No. 2 Impact breaker and a Broadbent 16′′ × 5′′ granulator. Grading was carried out with two small barrel screens at Hok Un and with a Parker Oscillex 28′ × 4′ vibrating screen at Tsat Tze Mui.
289. Screening capacity at Hok Un and secondary crushing capacity at both Quarries had, in the past, proved to be the main factors limiting production rate, and late in the year a 10′ × 4′ triple deck Pegson-Telsmith vibratory screen arrived for Hok Un together with two Pegson Telsmith 36′′ cone crusher, one for each Quarry.
290. In the meantime a scheme had been drawn up for the reorganization of the plant at Hok Un Quarry to incorporate the new elements and detailed working drawings were completed in readiness for the scheme to be put into effect after the end of the year.
291. Both Quarries worked 16 hours a day for 6 days each week, but were still unable to cope with the full demand for their products. This rate of working placed a great strain on the plant and made it necessary to carry increased stocks of spare parts and equipment at the Quarries. At Tsat Tze Mui, storage space was available but at Hok Un additional safe storage was necessary and this was provided by modifications and additions to the adjacent Shek Shan Depot.
292. There was a reduced demand for stone from Hok Un Quarry although this was offset by an increased demand for bituminous macadam, but at Tsat Tze Mui Quarry the reverse was apparent. The following table shows the output from the Quarries in comparison with the figures for the three previous years.
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288. At both Quarries the primary crushing unit comprised two 24′′ × 13′′ Disc Crushers and a Pegson 16′′ x 5′′ granulator and those at Tsat Tze Mui were a Kubit No. 2 Impact breaker and a Broadbent 16′′ x 5′′ granulator. Grading was carried out with two small barrel screens at Hok Un and with a Parker Oscillex 28' x 4' vibrating screen at Tsat Tze Mui.
289. Screening capacity at Hok Un and secondary crushing capacity at both Quarries had, in the past, proved to be the main factors limiting production rate, and late in the year a 10' x 4' triple deck Pegson-Telsmith vibratory screen arrived for Hok Un together with two Pegson Telsmith 36′′ cone crusher, one for each Quarry.
290. In the meantime a scheme had been drawn up for the reorganization of the plant at Hok Un Quarry to incorporate the new elements and detailed workiwg drawings were completed in readiness for the scheme to be put into effect after the end of the year.
291. Both Quarries worked 16 hours a day for 6 days each week, but were still unable to cope with the full demand for their products. This rate of working placed a great strain on the plant and made it necessary to carry increased stocks of spare parts and equipment at the Quarries. At Tsat Tze Mui, storage space was available but at Hok Un additional safe storage was necessary and this was provided by modifications and additions to the adjacent Shek Shan Depot.
292. There was a reduced demand for stone from Hok Un Quarry although this was offset by an increased demand for bituminous macadam, but at Tsat Tze Mui Quarry the reverse was apparent. The following table shows the output from the Quarries in comparison with the figures for the three previous years.
63
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