Oil, Gas, and Mining: A Sourcebook for Understanding the Extractive Industries provides developing countries with a technical understanding and practical options around oil, gas, and mining sector development issues. A central premise of the Sourcebook is that good technical knowledge can better inform political, economic, and social choices with respect to sector development and the related risks and opportunities. The guidance provided by the Sourcebook assumes a broad set of overarching principles, all centered on good governance and directed at achieving positive and broadly based sustainable development outcomes. This Sourcebook is rich in presenting options to challenges, on the understanding that contexts and needs vary, and that there is much to be gained from appreciating the lessons learned from a broad set of experiences. It is intended for use by senior government officials, decision makers, domestic and international technical specialists, civil society and individuals alike. It has been developed through a partnership of universities, industry and civil society organizations, and the World Bank. The Sourcebook is also available in a constantly evolving online version at www.eisourcebook.org.