This site has extensive information about how
coal is used and how clean coal technology can
improve the environmental performance of coal
use.
More suggestions and sources
Crawshaw, Norman. The first wave: a history
of the early days of coal in Buller. Westport:
N. Crawshaw, 1999.
Ministry of Energy. The coal industry of New
Zealand. Wellington: Government Printer,
1974.
Richardson, Len. Coal, class and community:
the united mineworkers of New Zealand,
1880–1960. Auckland: Auckland University
Press, 1995.
Sherwood, A. M. An outline of the geology of
New Zealand coalfields. New Zealand Geological
Survey Record 7. Wellington: New Zealand Geological
Survey, 1986.
Wood, Brian. Coal Gorge and the Brunner
suspension bridge: a heritage and environmental
study. Greymouth: B. Wood, 2004.