Hallador Energy Company - Our Businesses - Sunrise Coal - Mine Overview

Hallador Energy — think Marketability

Hallador Energy — think Marketability

HALLADOR ENERGY COMPANY 2021 FORM 10-K

Hallador Energy Company - Home Page

Hallador's Sunrise Coal to halt production at Carlisle coal mine in Indiana

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Hallador Energy Company - Our Businesses - Sunrise Coal - Mine Overview

Sunrise Coal LLC

HALLADOR ENERGY COMPANY 2021 FORM 10-K

Coal Companies Snag Paycheck Protection Loans for Small Business - Bloomberg

Hallador Energy Company - Investor Relations - Officers and Directors - Board of Directors - Person Details

Hallador Energy Company - Investor Relations - Officers and Directors - Board of Directors - Person Details