Banpu Pcl, Thailand’s largest coal producer, invested over $500 million in 2016-2017 to buy existing Marcellus wells and acreage in northeast Pennsylvania (see our Banpu stories here). The last such purchase was in December 2017 (see Banpu/Kalnin Buys 5,289 Ac & 35 Wells in NEPA Marcellus for $105M). Banpu is back–in a big way.