Garbage collection, The governement can either have an incinirator or have a landfill where the garbage is treated and the metane gas generated is used to generate electricity.
Both are specialised jobs and very prevalent in Hong kong and Macau, where over 7,000,000.00 million people live and survive and generate a lot of wealth in an area of 1068 sq. Kms. In Macau the waste heat boiler of the incininarator is also designed to generate electricity. Tom de Sousa Tom de Sousa in Hong kong.
