survey technigues for delineating "sand lenses" within the delta regions and infrastructure for gas distribution before tbe benefits of these resources could be rea I i zed. 2. Coal 9. Developing countries account for about 26 per cent of the known world recoverable reserves of coal of all types that are technically and economically expl-oitable under current conditions. Of this amount, China and India account for 85 per cent. It is widely recognized, however, that the coal potential of many developing countries may be substantially larger than the amount of known reserves, since exploratory efforts have been fragmentarv. The World Energy Conference -in 1983 estinated that the <ieveloping countries had more than 46 billion tons of technically and econonically recoverable reserves of coal. fn 1983' these countries consumed about 199 rnillion tons. These magnitudes indicate a large potential for utitizing coal as a source of energy. 10. Furthermore, the technology of coal production and utilization has been lonq proven and is well established. In a numkrer of sectors, such as electricity generation, industrial-process heat and, to a lesser extent, household uses, coal utilization is competitive with oil at current world oil prices. But in countries that have so far not produced coal, the development of coal usually reouires large investments for its "upstream" activities (including exploration and production) and "downstream, activities (such as refininq) ' The environmentar concerns relating to coal production and user dDd the associated abatement costs, should also be taken into consideration in expandinq the role of eoal in developing count r ies. 3. Nuclear Power 11. Based on <lata available at the beqinning of 1983, it was estinated 9/ that the reasonably assured resources of uranium of the world were about 2 million tons, and the world estimated additional resources u'ere about l'2 rnillion tons' Tbe reasonably assured resources of developing countries amounted to 515r600 tons,
**Analysis**
The text primarily discusses the potential of different energy sources, such as coal and nuclear power, in developing countries. It highlights the importance of utilizing these resources to meet the energy demands of these countries, while also mentioning environmental concerns and the need for investments in exploration and production.

**Category**
Natural resources and environment, Economic development