The world has bountiful supplies of coal.  For now it is more of a demand issue.  Environmental concerns are preventing us from maximizing the use of burning coal for baseload power generation.  Coal is 43% cheaper than energy derived from burning the most efficient natural gas plants.  Economic conerns will eventually prevail and great strides are being made in capturing and storing carbon.  The US could quadruple, according do the DOE, its oil reserves by using the captured carbon dioxide to improve and expand the oil recovery program.  Also, coal-derived motor fuels (CTL) will increase the demand for coal as the price for oil remains above %75/B.  New power generation and CTL projects will greatly increase the demand and price for coal.  Coal demand is expected to rise 80% in China and India by 2030 and 72% for the ROW by 2032.