A carbon tax can be implemented by taxing all sources of carbon as they are pulled out of the ground or imported. (green.blogs.nytimes.com)
They sometimes cover up the massive production of the illegal small coal miners to conceal income from tax sources. (scientificamerican.com)
Specifically, this lesson is for teaching tax sources and where tax is generated, looking in detail at direct and indirect taxes and all forms of government income. (tes.com)