Peabody Energy, a coal mining company, was falling early Monday after it agreed to buy the steelmaking coal business of mining giant Anglo American.Shares fell 1.7% to $26.95 when the market opened. The company is paying up to $3.

Anglo American signed a deal to sell its remaining steelmaking coal assets to U.S. miner Peabody Energy for up to $3.8 billion, the first major step in its large-scale business reshaping.

Anglo American’s deal sits in line with the mining company’s plans to refocus its business on copper, iron ore and crop nutrients.