This publication a series of papers that were presented at the Training Workshop on Drafting of Implementing Rules and Regulations for Mining Laws of Transitional Economies, held at Bangkok from 18 to 20 December 2001. The publication contains two parts. The first part reviews the critical and emerging issues of policy and management practices in investment promotion and sustainable development of mineral resources sector. Based on an overview of international and regional mining practices, the papers provide valuable guidelines and policy options in the formulation of mining regulatory regime, inter-ministerial coordination and cooperation in the development of the mineral sector at a national level, policy issues related to decentralization and resource rent revenue sharing as well as policy options for land reclamation and mine closure. The second part of the publication contains a review of policies, regulatory regime sand management practices for investment promotion and sustainable development of the mineral resources sector as experienced by the countries with economies in transition and developing countries of East and South-East Asia. It is hoped that this publication will be useful to relevant government officials and seminar executives of mining companies in understanding emerging policy options and regulatory regimes that effectively catalyse foreign direct investment in the mineral sector.