# Relationship history for MSHA mine 1513289

Current hierarchy: **Howell Corporation → Lake Coal Company Inc → Loggy Hollow No 6 Mine**

- 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:** Howell Corporation → Loggy Hollow No 6 Mine; 1977-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Narce Caudill Quality Coal Company Inc → Loggy Hollow No 6 Mine; 1982-02-01 to 1983-05-08; source msha-controller-operator-history
- **controller_controls_mine:** Caudill Forrester & Narce Et Al → Loggy Hollow No 6 Mine; 1982-02-01 to 1983-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Caudill Forrester & Narce Et Al → Narce Caudill Quality Coal Company Inc; 1982-02-01 to 1983-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → Loggy Hollow No 6 Mine; 1983-05-09 to 1984-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1983-05-09 to 1984-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Katco Mining Company Inc → Loggy Hollow No 6 Mine; 1984-07-10 to 1987-05-25; source msha-controller-operator-history
- **controller_controls_mine:** David  Hogg et al → Loggy Hollow No 6 Mine; 1984-07-10 to 1987-05-25; source msha-controller-operator-history
- **controller_controls_operator:** David  Hogg et al → Katco Mining Company Inc; 1984-07-10 to 1987-05-25; source msha-controller-operator-history
- **operator_operates_mine:** Lake Coal Company Inc → Loggy Hollow No 6 Mine; 1987-05-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Howell Corporation → Lake Coal Company Inc; 1987-05-26 to current/open; source msha-controller-operator-history