The letter included everything from accusations that Trump “spread fake news” to hurt Blankenship’s campaign to attacks on the Mine Safety and Health Administration, which accused the former mining executive of a pattern of safety violations that ultimately led to the deaths of 29 men in a 2010 mining explosion.

Blankenship, convicted of a misdemeanor, spent a year in prison because of his role in the accident. He lost the Republican Senate primary Tuesday evening to West Virginia Attorney General Patrick Morrisey. Throughout his bid, Blankenship published a series of advertisements targeting Republicans, notably Senate Majority Leader Mitch McConnell.

In his letter to Trump, Blankenship says he agrees with the president’s policies and his complaints about the news media — but called out Trump for his “interference in the West Virginia election” that Blankenship said “displayed a lack of understanding of the likely outcome of the upcoming general election.”