# Relationship history for MSHA mine 4605853

Current hierarchy: **Thompson Elizabeth → Pinnacle Creek Mining Corp → Pinnacle Creek 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** National Bulk Carriers → Pinnacle Creek Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** United Pocahontas Coal Company → Pinnacle Creek Mine; 1978-08-01 to 1986-11-18; source msha-controller-operator-history
- **controller_controls_operator:** National Bulk Carriers → United Pocahontas Coal Company; 1978-08-01 to 1986-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Barkers Ridge Coal Company → Pinnacle Creek Mine; 1986-11-19 to 1989-03-19; source msha-controller-operator-history
- **controller_controls_mine:** Mutchler Paul → Pinnacle Creek Mine; 1986-11-19 to 1989-03-19; source msha-controller-operator-history
- **controller_controls_operator:** Mutchler Paul → Barkers Ridge Coal Company; 1986-11-19 to 1989-03-19; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Creek Mining Corp → Pinnacle Creek Mine; 1989-03-20 to 1992-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Camm Harry Et Al → Pinnacle Creek Mine; 1989-03-20 to 1992-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Camm Harry Et Al → Pinnacle Creek Mining Corp; 1989-03-20 to 1992-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Creek Mining Corp → Pinnacle Creek Mine; 1992-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thompson Elizabeth → Pinnacle Creek Mine; 1992-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thompson Elizabeth → Pinnacle Creek Mining Corp; 1992-09-01 to current/open; source msha-controller-operator-history