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- central colorado improvement company18
- cfandi steel corporation[remove]18
- colorado coal and steel works company18
- colorado fuel and iron company18
- colorado fuel company18
- oral histories18
- southern colorado coal and town company18
- steel industry and trade18
- colorado fuel and iron corporation15
- colorado coal and iron company13
- colorado fuel and iron coporation3
- engineering3
- miner3
- brill2
- coal miners2
- jackson2
- johnson2
- land and water2
- rolling mills2
- apodaca1
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