# Relationship history for MSHA mine 5000546

Current hierarchy: **Wayne Louis Peppler → Ozzma Mining LLC → Switch 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

- **operator_operates_mine:** Don Rowley → Switch Mine; 1980-05-01 to 1983-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Rowley Don → Switch Mine; 1980-05-01 to 1983-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rowley Don → Don Rowley; 1980-05-01 to 1983-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Mohawk Oil Company Ltd → Switch Mine; 1981-08-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mohawk Oil & Gas Inc → Switch Mine; 1983-07-10 to 2020-07-21; source msha-controller-operator-history
- **controller_controls_operator:** Mohawk Oil Company Ltd → Mohawk Oil & Gas Inc; 1983-07-10 to 2020-07-21; source msha-controller-operator-history
- **operator_operates_mine:** Ozzma Mining LLC → Switch Mine; 2020-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wayne Louis Peppler → Switch Mine; 2020-07-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne Louis Peppler → Ozzma Mining LLC; 2020-07-22 to current/open; source msha-controller-operator-history