# Relationship history for MSHA mine 3102176

Current hierarchy: **Adan P Sanchez → Mar Mac Aggregates, LLC → Mar Mac 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:** Mar Mac Sand & Gravel LLC → Mar Mac Pit; 2001-07-01 to 2004-11-14; source msha-controller-operator-history
- **controller_controls_mine:** Tim D  Whitfield → Mar Mac Pit; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tim D  Whitfield → Mar Mac Sand & Gravel LLC; 2001-07-01 to 2004-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Mar Mac Aggregates, LLC → Mar Mac Pit; 2004-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bert D  May → Mar Mac Pit; 2004-11-15 to 2020-02-04; source msha-controller-operator-history
- **controller_controls_operator:** Bert D  May → Mar Mac Aggregates, LLC; 2004-11-15 to 2020-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Anthony  Broome et al → Mar Mac Pit; 2020-02-05 to 2021-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Broome et al → Mar Mac Aggregates, LLC; 2020-02-05 to 2021-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Art  Cates et al → Mar Mac Aggregates, LLC; 2020-02-05 to 2021-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Bert Deems  May et al → Mar Mac Aggregates, LLC; 2020-02-05 to 2021-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Johnny  Barbee → Mar Mac Pit; 2021-10-01 to 2025-02-13; source msha-controller-operator-history
- **controller_controls_operator:** Johnny  Barbee → Mar Mac Aggregates, LLC; 2021-10-01 to 2025-02-13; source msha-controller-operator-history
- **controller_controls_mine:** Adan P Sanchez → Mar Mac Pit; 2025-02-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Adan P Sanchez → Mar Mac Aggregates, LLC; 2025-02-14 to current/open; source msha-controller-operator-history