# Relationship history for MSHA mine 4404500

Current hierarchy: **Williamson Bill → Little Mud Coal Company → No 1**

- 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:** Compton Ronnie--Scott Mackney & Roy Hurt → No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rife Ralph C → No 1; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mecca Coal Company → No 1; 1976-09-13 to 1977-05-01; source msha-controller-operator-history
- **controller_controls_mine:** Messer James → No 1; 1976-09-13 to 1977-05-01; source msha-controller-operator-history
- **controller_controls_operator:** Messer James → Mecca Coal Company; 1976-09-13 to 1977-05-01; source msha-controller-operator-history
- **operator_operates_mine:** R L & H Coal Company Inc → No 1; 1977-05-02 to 1978-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Rife Ralph C → R L & H Coal Company Inc; 1977-05-02 to 1978-05-22; source msha-controller-operator-history
- **operator_operates_mine:** F & N Coal Company → No 1; 1978-05-23 to 1979-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Newberry Ronald Et Al → No 1; 1978-05-23 to 1979-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Newberry Ronald Et Al → F & N Coal Company; 1978-05-23 to 1979-03-18; source msha-controller-operator-history
- **operator_operates_mine:** Ruth Ann Coal Company → No 1; 1979-03-19 to 1979-06-05; source msha-controller-operator-history
- **controller_controls_operator:** Compton Ronnie--Scott Mackney & Roy Hurt → Ruth Ann Coal Company; 1979-03-19 to 1979-06-05; source msha-controller-operator-history
- **operator_operates_mine:** Teresa Lynn Coal Company → No 1; 1979-06-06 to 1979-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Compton Jack & Worley Hill → No 1; 1979-06-06 to 1979-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Compton Jack & Worley Hill → Teresa Lynn Coal Company; 1979-06-06 to 1979-08-02; source msha-controller-operator-history
- **operator_operates_mine:** Water Lou Mining → No 1; 1979-08-03 to 1980-01-04; source msha-controller-operator-history
- **controller_controls_mine:** Water Lou Mining → No 1; 1979-08-03 to 1980-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Water Lou Mining → Water Lou Mining; 1979-08-03 to 1980-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Little Mud Coal Company → No 1; 1980-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Williamson Bill → No 1; 1980-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Williamson Bill → Little Mud Coal Company; 1980-01-05 to current/open; source msha-controller-operator-history