The American "King of Coal" Chris Cline, who was killed in a helicopter crash in the Bahamas, was honored.
President Donald Trump described Cline, a large Republican donor, as a "great businessman and energy expert."
Jim Justice, the governor of West Virginia, where Mr. Cline was born, described the 60-year-old tycoon as a "WV superstar" and "wonderful" man. The billionaire, his daughter Kameron, 22, three more women and two men died in the crash on Thursday
The helicopter was on its way from Big Grand Cay, Bahamas, to Fort Lauderdale, Florida.
The wreck was found on the seabed. The cause of the crash is being investigated.
Who was Chris Cline?
Mr. Cline began working in the mines of West Virginia in the early twenties.
In 2006, Cline Foresight founded Energy to manage the coal resources in the Illinois Basin. He later sold most of his shares for $ 1.4 billion (£ 1.1 billion).
The billionaire was an important supporter of the Republican Party. He donated $ 1 million to Mr. Trump's inauguration committee in 2017.
He also generously donated to Marshall University, West Virginia, where he studied.