This page seems to have the best picture of a rubber tree being tapped, though the content is about rubber allergies. There may be a harmless popup ad ascociated with it.
Although the picture is not as good, this page--like most Wikipedia pages--has zillions of links to get your research off to a running start.
Here is a short but facinating page about synthetic rubber, as well as the political conditions that drove the breakthoughs.
This page discusses recycling of rubber tires with good pictures.
This page has some interesting facts, especially relating to aluminum recycling.
Did you know that when aluminum was first dicovered, it was so precious that Napoleon commissioned spoons of it for banquets. That and the Washington Monument on this page.
More to come