10 protesters were arrested, the Post-Dispatch reported Tuesday.
Patriot Coal, which was spun off from Peabody Energy, the nation's largest coal company, five years ago, filed for Chapter 11 bankruptcy last year. As part of the filing, Patriot is seeking to limit retiree health benefits to 22,000 miners, mining retirees and their families, the Wall Street Journal reported.
Patriot Coal filed for Chapter 11 bankruptcy last year.
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