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Quarry Economics In Nigeria

economic assessment of granite quarrying in oyo state ,how to cite this article: s.k. osasan , 2009. economic assessment of granite quarrying in oyo state, nigeria. journal of engineering and applied sciences, 4: 135 .mining and quarrying,economy. mining and quarrying. 1 to 9 persons employed. 21.0. 11.9. 29.7. 5.5 nigeria. 3.6. egypt. 2.1. netherlands. 11.7. russian. federation. 31.9..mining and quarry in nigeria economy,mining and quarrying statistics - nigeria's no1 economy mining is one of the oldest economic activities in nigeria dating back to prehistoric times when man .

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