... EXPANDED PRECAST CONCRETE LININGS SYSTEMS WATER SUPPLY GEOLOGY MIX GRAVEL SAND SILT LAYERS ARTESIAN PRESSURE THANET SAND THANET GROUTING MULTI STAGE FREEZING NITROGEN TESTS TREATMENT WORKS RAW WATER DESIGN TERMINALS CONSTRUCTION GROUND CONDITIONS DRILLING BENTONITE CEMENT...

... and by contributors to thdeiscussion. The impact of nitrateson water resources management is causing concern. During the last 5 6 6 0 years there has been an underlying increase in nitrates in surface waters and this trend has increased sharply during the last decade. Sources of nitrogen contributing to this increase...

...M E TWINE © Thomas Telford and ICE 1980 C H DOBBIE NORTH EAST LONDON POLYTECHNIC DIVERS INDUSTRIES SAFETY COLD VISIBILITY NITROGEN SATURATION OFFSHORE DIVING REDUCTION DECOMPRESSION COMMUNICATION NARCOSIS CONSTRUCTION RISKS HAZARDS SICKNESS DEATHS MINIMISATION...

.... 64. When we started the modelling workin the estuary we assumed the rate con- stants givenin reference 7. The rate constant forthe uptake of carbonaceous biochemical oxygen demand was the same as that givenby the Author, but that for the conversion of ammoniacal nitrogen to nitrate nitrogen...

...C A FOGDEN; A D GARROD; D E WRIGHT; J D LAWRENCE; F D B FORSTER; O A GURTON; E HILL; C A GILLOTT; J G S HYND © Thomas Telford and ICE 1966 HAZARDS BLASTING FUMES ROCKS TUNNELLING NITROGEN GAS NITROGEN DIOXIDE TUNNELS EXPLOSIVES SAFETY WORKERS LABOUR DEATHS VENTILATION AIR...

...A B MANN; SIR C PARSONS © Thomas Telford and ICE 1963 MINISTRY OF PUBLIC BUILDING & WORKS ROCKETS BLUE STREAK TESTS FACILITIES TESTING ENGINES INSTRUMENTATION OXYGEN NITROGEN LIQUIDS WATER EFFLUENT TREATMENT DISPOSAL SPADEADAM UK PARSONSMEMORIALLECTURE...