S.I.F.E.: Sustainability

On Tuesday (2 June, 2009) three representatives, Joe, Clement, and Lauren, from S.I.F.E. - Students in Free Enterprise - visited our class and showed us a presentation PowerPoint about sustainability. They talked about social sustainability, economical sustainability, and environmental sustainability.
Using an apple exemplifying the earth, they told us the fraction of land available for growing food/crops; 1/32 of the earth.
They told us about landfills, that there are 1000 closed landfills and 60 open landfills, and how long it takes for rubbish to break down:
Paper - 2.5 months
Milk carton - 5 years
Cigarette - 10 years
Tin can (tin) - 100 years
Beer can (aluminium) - 200-500 years

Matai Island Jobs

We'd need jobs to organise a society on the Matai Island. Here is a list of available jobs (not in order of status):
Farmers and agriculturists; to manage the production of crops, livestock and poultry, and husbandry alike.
A form of governance or council to control and make decisions for the island.
Extractive metallurgist; for recovering useful metals and minerals from the ore in the island.
Builders and carpenters; to establish our community and build shelters.
Electricians and technicians; who we can rely on to install technology and electricity.
Mechanics and engineers; to work with any means of transport and machinery.
Sailors; for getting across and bringing resources from the mainland.
Police; to control the goings-on on the island.
Doctors and medical staff; to look after the inhabitants of the island.
I hope I haven't missed any, though I doubt that I haven't.
Please feel free to comment anymore ideas.