First 94 words of the document:
Two types of waste DISPOSAL
Combustion of waste material Well managed
Converted into heat, gas, steam and ash hygienic and cheap.
Practical way of disposing certain hazardous
Emits gaseous pollutants. Badly managed
e.g windblown litter,
vermin and liquids
Modern landfills have
methods to stop leaching clay
and plastic lining. Rubbish is covered to prevent vermin. There are also gas
extraction systems to harness energy.