# Relationship history for MSHA mine 0103321

Current hierarchy: **NACCO Industries Inc → Centennial Natural Resources LLC → Poplar Springs**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Reid Dolores → Poplar Springs; 1982-02-01 to 2002-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Frank C  Mann → Poplar Springs; 1987-05-08 to 2007-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Robert J  Reed Sr → Poplar Springs; 2002-10-01 to 2012-08-31; source msha-controller-operator-history
- **operator_operates_mine:** National Coal of Alabama Inc → Poplar Springs; 2005-05-27 to 2013-12-04; source msha-controller-operator-history
- **controller_controls_operator:** Frank C  Mann → National Coal of Alabama Inc; 2005-05-27 to 2007-10-18; source msha-controller-operator-history
- **controller_controls_mine:** National Coal Corporation → Poplar Springs; 2007-10-19 to 2009-08-02; source msha-controller-operator-history
- **controller_controls_operator:** National Coal Corporation → National Coal of Alabama Inc; 2007-10-19 to 2009-08-02; source msha-controller-operator-history
- **controller_controls_mine:** TCW Energy Fund XIV-A, L.P. et al → Poplar Springs; 2009-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TCW Energy Fund XIV-A, L.P. et al → National Coal of Alabama Inc; 2009-08-03 to 2013-12-04; source msha-controller-operator-history
- **controller_controls_mine:** TRU Energy Services LLC → Poplar Springs; 2012-09-01 to 2012-10-29; source msha-controller-operator-history
- **controller_controls_mine:** NACCO Industries Inc → Poplar Springs; 2012-10-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Reed Minerals, Inc. → Poplar Springs; 2013-12-05 to 2014-11-10; source msha-controller-operator-history
- **controller_controls_operator:** Robert J  Reed Sr → Reed Minerals, Inc.; 2013-12-05 to 2012-08-31; source msha-controller-operator-history
- **controller_controls_operator:** TRU Energy Services LLC → Reed Minerals, Inc.; 2013-12-05 to 2012-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Reid Dolores → Reed Minerals, Inc.; 2013-12-05 to 2002-09-30; source msha-controller-operator-history
- **controller_controls_operator:** NACCO Industries Inc → Reed Minerals, Inc.; 2013-12-05 to 2014-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Centennial Natural Resources LLC → Poplar Springs; 2014-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** NACCO Industries Inc → Poplar Springs; 2014-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** NACCO Industries Inc → Centennial Natural Resources LLC; 2014-11-11 to current/open; source msha-controller-operator-history