# Relationship history for MSHA mine 0301949

Current hierarchy: **Chris  Meyer → McHenry Aggregates, LLC → McHenry Aggregates**

- 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:** Lite-Rock Materials → McHenry Aggregates; 2007-05-18 to 2008-06-11; source msha-controller-operator-history
- **controller_controls_mine:** William D  Almond → McHenry Aggregates; 2007-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William D  Almond → Lite-Rock Materials; 2007-05-18 to 2008-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Michael G  McHenry II → McHenry Aggregates; 2007-06-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** McHenry Aggregates Inc → McHenry Aggregates; 2008-06-12 to 2024-09-22; source msha-controller-operator-history
- **controller_controls_operator:** Michael G  McHenry II → McHenry Aggregates Inc; 2008-06-12 to 2024-09-22; source msha-controller-operator-history
- **operator_operates_mine:** McHenry and Meyer Companies LLC → McHenry Aggregates; 2024-09-23 to 2024-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Christopher  Meyer → McHenry Aggregates; 2024-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christopher  Meyer → McHenry and Meyer Companies LLC; 2024-09-23 to 2024-10-23; source msha-controller-operator-history
- **operator_operates_mine:** McHenry Aggregates, LLC → McHenry Aggregates; 2024-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Meyer → McHenry Aggregates; 2024-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Meyer → McHenry Aggregates, LLC; 2024-10-24 to current/open; source msha-controller-operator-history