# Relationship history for MSHA mine 4402939

Current hierarchy: **Branscome Holding LLC → Branscome Operating, LLC → Hofmeyer Pit**

- 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:** Americal Materials Company → Hofmeyer Pit; 1950-01-01 to 1979-10-22; source msha-controller-operator-history
- **controller_controls_mine:** Blakemore Construction Corp → Hofmeyer Pit; 1950-01-01 to 1990-03-11; source msha-controller-operator-history
- **controller_controls_operator:** Blakemore Construction Corp → Americal Materials Company; 1950-01-01 to 1979-10-22; source msha-controller-operator-history
- **controller_controls_mine:** Henry S  Branscome → Hofmeyer Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Henry S Branscome Inc → Hofmeyer Pit; 1979-10-23 to 2001-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Henry S  Branscome → Henry S Branscome Inc; 1979-10-23 to 2001-02-15; source msha-controller-operator-history
- **operator_operates_mine:** Branscome Operating, LLC → Hofmeyer Pit; 2001-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Colas S A → Hofmeyer Pit; 2001-02-16 to 2023-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Branscome Operating, LLC; 2001-02-16 to 2023-04-10; source msha-controller-operator-history
- **controller_controls_mine:** Adams Construction Company → Hofmeyer Pit; 2023-04-11 to 2023-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Adams Construction Company → Branscome Operating, LLC; 2023-04-11 to 2023-04-11; source msha-controller-operator-history
- **controller_controls_mine:** Branscome Holding LLC → Hofmeyer Pit; 2023-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Branscome Holding LLC → Branscome Operating, LLC; 2023-04-12 to current/open; source msha-controller-operator-history