Desert greening desiccating winds and the invasion of sand. The Rajasthan Canal system in India is the major irrigation scheme of the Thar Desert and is intended to reclaim it and to check spreading of the desert to fertile areas. Prevention of shifting sand dunes is accomplished through plantations of "Acacia tortilis" near Laxmangarh town. There are few local tree species suitable for planting in the desert region and these are slow growing. The introduction of exotic tree species in the desert for plantation has become necessary. Many species of Eucalyptus, Acacia, Cassia and other genera from Israel, Australia, US, Russia, Zimbabwe,
Geological Survey of Pakistan notably carried out an ingenious work on nuclear geology and geography as part of the clandestine atomic bomb project, and played an integral role in the selection of the test sites. Throughout this time, the GSP's scientists continued exploring uranium and plutonium, as well as other material sources in all over the country. In 1992, The GSP announced the discovery of the huge deposits of coal at Thar Desert in Sindh. The GSP sponsored and published various studies on the geology of Thar Desert. In the 1990s, the GSP issued and produced several maps of atlas of Pakistan, with mapping