# Relationship history for MSHA mine 0102409

Current hierarchy: **TCW Energy Fund XIV-A, L.P. → Mann Steel Products Inc → Henry Ellen No 2**

- 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:** Hallmark Fred H → Henry Ellen No 2; 1977-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hallmark & Son Coal Company → Henry Ellen No 2; 1981-12-01 to 1987-10-22; source msha-controller-operator-history
- **controller_controls_operator:** Hallmark Fred H → Hallmark & Son Coal Company; 1981-12-01 to 1987-10-22; source msha-controller-operator-history
- **controller_controls_mine:** Frank C  Mann → Henry Ellen No 2; 1987-05-08 to 2007-10-18; source msha-controller-operator-history
- **operator_operates_mine:** Mann Steel Products Inc → Henry Ellen No 2; 1987-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Frank C  Mann → Mann Steel Products Inc; 1987-10-23 to 2007-10-18; source msha-controller-operator-history
- **controller_controls_mine:** National Coal Corporation → Henry Ellen No 2; 2007-10-19 to 2009-08-02; source msha-controller-operator-history
- **controller_controls_operator:** National Coal Corporation → Mann Steel Products 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 → Henry Ellen No 2; 2009-08-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** TCW Energy Fund XIV-A, L.P. et al → Mann Steel Products Inc; 2009-08-03 to current/open; source msha-controller-operator-history