# Relationship history for MSHA mine 4606704

Current hierarchy: **John  Lingerfelt → Benafuels Mc Comas Inc → Benafuels Mccomas Inc**

- 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:** Bryant William S → Benafuels Mccomas Inc; 1981-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Benafuels Inc → Benafuels Mccomas Inc; 1983-10-01 to 1986-09-18; source msha-controller-operator-history
- **controller_controls_operator:** Bryant William S → Benafuels Inc; 1983-10-01 to 1986-09-18; source msha-controller-operator-history
- **operator_operates_mine:** Benafuels Mc Comas Inc → Benafuels Mccomas Inc; 1986-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John  Lingerfelt → Benafuels Mccomas Inc; 1986-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Lingerfelt → Benafuels Mc Comas Inc; 1986-09-19 to current/open; source msha-controller-operator-history