China’s state-owned coal behemoth is heading to Pennsylvania to learn how to tap into natural gas embedded in shale. China Shenhua Energy Co., the world’s second largest coal company, is planning to create a joint venture between a U.S. subsidiary and a private Pennsylvania natural gas producer to drill 25 natural gas wells in the Marcellus Shale. The $146 million project — which is slated to produce 3.8 billion cubic meters of gas in three decades — is China Shenhua’s first foreign venture into shale gas, according to China Daily. China Shenhua said it aims to learn the trade and...