PT Adaro Energy Tbk is a leading Indonesian coal mining company and Indonesia's second-largest producer of thermal coal. Adaro Energy has developed into a vertically integrated organization, with pit-to-power subsidiaries including mining, barging, ship-loading, dredging, port services, marketing and power generation.
This statistic shows the ten leading mining companies worldwide based on market value as of June 2018. The values are based on the 2018 Financial Times Equity list of the leading global companies. As of June 2018, mining company BHP Billiton (one of the largest coal companies, among other minerals) reached a market value of over 132
Coal company valuation, production and reserves ... The business strategy of a few companies includes diversification into non-coal resources to stabilise and to grow out cash flows, but to date, most US producers focus exclusively on coal operations.