https://www.sec.gov/divisions/marketreg/mr-noaction/teco100804.htm
TECO Energy, Inc.: No-Action Letter dated October 8, 2004
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https://www.utilitydive.com/news/teco-energy-sells-coal-subsidiary-exits-mining-business/324082/
TECO Energy sells coal subsidiary, exits mining business | Utility Dive
The company will sell TECO Coal and its subsidiaries to Cambrian Coal Corp., a member of the Booth Energy Group.
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TECO Energy and Yahoo Finance
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