# Relationship history for MSHA mine 1509959

Current hierarchy: **Cole Wilburn J → Rough Diamond Inc → No 11**

- 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:** David  Morgenstern et al → No 11; 1974-03-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** L P Coal Company Inc → No 11; 1976-07-01 to 1982-12-12; source msha-controller-operator-history
- **controller_controls_operator:** David  Morgenstern et al → L P Coal Company Inc; 1976-07-01 to 1982-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Morgenstern et al → L P Coal Company Inc; 1976-07-01 to 1982-12-12; source msha-controller-operator-history
- **operator_operates_mine:** Therismos Mining → No 11; 1982-12-13 to 1984-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Deaton W Philip & Terry W Ferguson → No 11; 1982-12-13 to 1984-01-08; source msha-controller-operator-history
- **controller_controls_operator:** Deaton W Philip & Terry W Ferguson → Therismos Mining; 1982-12-13 to 1984-01-08; source msha-controller-operator-history
- **operator_operates_mine:** L & S Coal Sales Inc → No 11; 1984-01-09 to 1984-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Lewis Jack C → No 11; 1984-01-09 to 1984-01-29; source msha-controller-operator-history
- **controller_controls_operator:** Lewis Jack C → L & S Coal Sales Inc; 1984-01-09 to 1984-01-29; source msha-controller-operator-history
- **operator_operates_mine:** C R M Coal Corp → No 11; 1984-01-30 to 1984-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Charles Warren → No 11; 1984-01-30 to 1984-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Charles Warren → C R M Coal Corp; 1984-01-30 to 1984-02-28; source msha-controller-operator-history
- **operator_operates_mine:** C R M Coal Corp Inc → No 11; 1984-02-29 to 1984-09-10; source msha-controller-operator-history
- **controller_controls_mine:** Shackelford Dallas → No 11; 1984-02-29 to 1984-09-10; source msha-controller-operator-history
- **controller_controls_operator:** Shackelford Dallas → C R M Coal Corp Inc; 1984-02-29 to 1984-09-10; source msha-controller-operator-history
- **operator_operates_mine:** T D A Industries Inc → No 11; 1984-09-11 to 1984-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Swan Harry E → No 11; 1984-09-11 to 1984-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Swan Harry E → T D A Industries Inc; 1984-09-11 to 1984-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Rough Diamond Inc → No 11; 1985-01-01 to 1985-12-16; source msha-controller-operator-history
- **controller_controls_mine:** Cole Wilburn J & William D Pruett → No 11; 1985-01-01 to 1985-12-16; source msha-controller-operator-history
- **controller_controls_operator:** Cole Wilburn J & William D Pruett → Rough Diamond Inc; 1985-01-01 to 1985-12-16; source msha-controller-operator-history
- **operator_operates_mine:** Rough Diamond Inc → No 11; 1985-12-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cole Wilburn J → No 11; 1985-12-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cole Wilburn J → Rough Diamond Inc; 1985-12-17 to current/open; source msha-controller-operator-history