# Relationship history for MSHA mine 3605447

Current hierarchy: **Fanell Thomas J → Laurel Coal Company Inc → Henry Coal Co Strip**

- 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:** Fanell Thomas J Et Al → Henry Coal Co Strip; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Indy-Penn Coal Company Inc → Henry Coal Co Strip; 1975-01-01 to 1979-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Krisch David M → Henry Coal Co Strip; 1975-01-01 to 1979-02-19; source msha-controller-operator-history
- **controller_controls_operator:** Krisch David M → Indy-Penn Coal Company Inc; 1975-01-01 to 1979-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Barnhart Robert D → Henry Coal Co Strip; 1978-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S E Barnhart & Sons Inc → Henry Coal Co Strip; 1979-02-20 to 1981-01-28; source msha-controller-operator-history
- **controller_controls_operator:** Barnhart Robert D → S E Barnhart & Sons Inc; 1979-02-20 to 1981-01-28; source msha-controller-operator-history
- **operator_operates_mine:** Laurel Coal Company Inc → Henry Coal Co Strip; 1981-01-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fanell Thomas J Et Al → Laurel Coal Company Inc; 1981-01-29 to current/open; source msha-controller-operator-history