# Relationship history for MSHA mine 1518233

Current hierarchy: **Johnny Layton  Johnson Jr → Black Light Energy LLC → Black Light Energy**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Henry  Chaney Jr → Black Light Energy; 1976-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** TECO Energy Inc → Black Light Energy; 1991-12-02 to 2015-09-20; source msha-controller-operator-history
- **controller_controls_mine:** Charles T  Norman et al → Black Light Energy; 1997-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T H W Coal Company Inc → Black Light Energy; 2000-01-01 to 2000-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Charles T  Norman et al → T H W Coal Company Inc; 2000-01-01 to 2000-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Howard  Norman et al → T H W Coal Company Inc; 2000-01-01 to 2000-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Cheyenne Elkhorn Coal Company Inc → Black Light Energy; 2000-06-01 to 2006-10-16; source msha-controller-operator-history
- **controller_controls_operator:** Henry  Chaney Jr → Cheyenne Elkhorn Coal Company Inc; 2000-06-01 to 2006-10-16; source msha-controller-operator-history
- **controller_controls_mine:** David L  Cordill → Black Light Energy; 2006-10-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Premier Elkhorn Coal Company → Black Light Energy; 2006-10-17 to 2009-06-11; source msha-controller-operator-history
- **controller_controls_operator:** TECO Energy Inc → Premier Elkhorn Coal Company; 2006-10-17 to 2009-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Jody Dale Puckett → Black Light Energy; 2007-07-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cheyenne Elkhorn Coal Co., Inc → Black Light Energy; 2009-06-12 to 2011-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Henry  Chaney Jr → Cheyenne Elkhorn Coal Co., Inc; 2009-06-12 to 2011-02-15; source msha-controller-operator-history
- **operator_operates_mine:** Black Belt Mining Inc → Black Light Energy; 2011-02-16 to 2011-09-12; source msha-controller-operator-history
- **controller_controls_operator:** David L  Cordill → Black Belt Mining Inc; 2011-02-16 to 2011-09-12; source msha-controller-operator-history
- **operator_operates_mine:** Viper Coal LLC → Black Light Energy; 2011-09-13 to 2012-01-29; source msha-controller-operator-history
- **controller_controls_operator:** Jody Dale Puckett → Viper Coal LLC; 2011-09-13 to 2012-01-29; source msha-controller-operator-history
- **operator_operates_mine:** Black Light Energy LLC → Black Light Energy; 2012-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnny Layton  Johnson Jr → Black Light Energy; 2012-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnny Layton  Johnson Jr → Black Light Energy LLC; 2012-01-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James H  Booth et al → Black Light Energy; 2015-09-21 to 2019-06-15; source msha-controller-operator-history
- **controller_controls_operator:** James H  Booth et al → Premier Elkhorn Coal Company; 2015-09-21 to 2009-06-11; source msha-controller-operator-history
- **controller_controls_mine:** J Mark  Campbell → Black Light Energy; 2019-06-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** J Mark  Campbell → Premier Elkhorn Coal Company; 2019-06-16 to 2009-06-11; source msha-controller-operator-history