# Relationship history for MSHA mine 0800843

Current hierarchy: **Troyer Donna → Fleet Rental Inc → Fleet Rental Incorporated**

- 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:** Venice Fill & Shell Inc → Fleet Rental Incorporated; 1950-01-01 to 1981-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Montgomery S E → Fleet Rental Incorporated; 1950-01-01 to 1981-11-03; source msha-controller-operator-history
- **controller_controls_operator:** Montgomery S E → Venice Fill & Shell Inc; 1950-01-01 to 1981-11-03; source msha-controller-operator-history
- **operator_operates_mine:** Gordon'S Inc → Fleet Rental Incorporated; 1981-11-04 to 1983-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Gordon Charles H → Fleet Rental Incorporated; 1981-11-04 to 1983-12-27; source msha-controller-operator-history
- **controller_controls_operator:** Gordon Charles H → Gordon'S Inc; 1981-11-04 to 1983-12-27; source msha-controller-operator-history
- **operator_operates_mine:** Fleet Rental Inc → Fleet Rental Incorporated; 1983-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Troyer Donna → Fleet Rental Incorporated; 1983-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Troyer Donna → Fleet Rental Inc; 1983-12-28 to current/open; source msha-controller-operator-history