# Relationship history for MSHA mine 4405488

Current hierarchy: **Johnson Danny R → P B C 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

- **operator_operates_mine:** John Bow Coal Company → No 1; 1980-08-01 to 1980-09-23; source msha-controller-operator-history
- **controller_controls_mine:** Bowman John Et Al → No 1; 1980-08-01 to 1980-09-23; source msha-controller-operator-history
- **controller_controls_operator:** Bowman John Et Al → John Bow Coal Company; 1980-08-01 to 1980-09-23; source msha-controller-operator-history
- **operator_operates_mine:** John Bow Coal Company → No 1; 1980-09-24 to 1980-10-29; source msha-controller-operator-history
- **controller_controls_mine:** Dye Jim & Ralph Phillips → No 1; 1980-09-24 to 1980-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Dye Jim & Ralph Phillips → John Bow Coal Company; 1980-09-24 to 1980-10-29; source msha-controller-operator-history
- **operator_operates_mine:** John Bow Coal Company → No 1; 1980-10-30 to 1980-12-09; source msha-controller-operator-history
- **controller_controls_mine:** Cregger James & James O Christian → No 1; 1980-10-30 to 1980-12-09; source msha-controller-operator-history
- **controller_controls_operator:** Cregger James & James O Christian → John Bow Coal Company; 1980-10-30 to 1980-12-09; source msha-controller-operator-history
- **operator_operates_mine:** John Bow Coal Company → No 1; 1980-12-10 to 1981-01-20; source msha-controller-operator-history
- **controller_controls_mine:** Tiller Johnny → No 1; 1980-12-10 to 1981-01-20; source msha-controller-operator-history
- **controller_controls_operator:** Tiller Johnny → John Bow Coal Company; 1980-12-10 to 1981-01-20; source msha-controller-operator-history
- **operator_operates_mine:** Double P & K Coal Company → No 1; 1981-01-21 to 1981-04-13; source msha-controller-operator-history
- **controller_controls_mine:** Price Junior V Et Al → No 1; 1981-01-21 to 1981-04-13; source msha-controller-operator-history
- **controller_controls_operator:** Price Junior V Et Al → Double P & K Coal Company; 1981-01-21 to 1981-04-13; source msha-controller-operator-history
- **operator_operates_mine:** Pyramid Coal Company → No 1; 1981-04-14 to 1981-07-12; source msha-controller-operator-history
- **controller_controls_mine:** Deel Verlin & Danny R Lowe Et Al → No 1; 1981-04-14 to 1981-07-12; source msha-controller-operator-history
- **controller_controls_operator:** Deel Verlin & Danny R Lowe Et Al → Pyramid Coal Company; 1981-04-14 to 1981-07-12; source msha-controller-operator-history
- **operator_operates_mine:** C & C Coal Company → No 1; 1981-07-13 to 1981-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Crouse Donald & James Crigger → No 1; 1981-07-13 to 1981-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Crouse Donald & James Crigger → C & C Coal Company; 1981-07-13 to 1981-09-28; source msha-controller-operator-history
- **controller_controls_mine:** Tiller Robert & Earnie → No 1; 1981-09-10 to 1982-05-16; source msha-controller-operator-history
- **operator_operates_mine:** R & E Coal Company → No 1; 1981-09-29 to 1982-05-16; source msha-controller-operator-history
- **controller_controls_operator:** Tiller Robert & Earnie → R & E Coal Company; 1981-09-29 to 1982-05-16; source msha-controller-operator-history
- **operator_operates_mine:** D & D Coal Company → No 1; 1982-05-17 to 1983-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Gray Delano & Dave Hamm → No 1; 1982-05-17 to 1983-10-18; source msha-controller-operator-history
- **controller_controls_operator:** Gray Delano & Dave Hamm → D & D Coal Company; 1982-05-17 to 1983-10-18; source msha-controller-operator-history
- **operator_operates_mine:** P B C Coal Company → No 1; 1983-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Johnson Danny R → No 1; 1983-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Johnson Danny R → P B C Coal Company; 1983-10-19 to current/open; source msha-controller-operator-history