1. Shanxi is a leading energy base with pillar industries of coal, metallurgy and chemical products.
2. Coal mine disasters are not rare in Pingdingshan as coal mining constitutes one of the city's pillar industries.
3. It expects the coal industrialization sector to be a new pillar economic unit with annual sales revenue of more than 100 billion yuan by 2010.
4. The coal industry is the pillar of the local economy, accounting for 40 per cent of the area's industrial output every year.