# Relationship history for MSHA mine 4105075

Current hierarchy: **Robert Aaron Myers; Robert Matt Nobles → LORAINE QUARRY PRODUCTS → JOINER 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

- **controller_controls_mine:** Bobby R  Nobles et al → JOINER PIT; 2003-01-05 to 2025-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Chuck  Williams → JOINER PIT; 2014-06-26 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chuck's Dozer Service, Inc → JOINER PIT; 2014-06-30 to 2015-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Chuck  Williams → Chuck's Dozer Service, Inc; 2014-06-30 to 2015-10-02; source msha-controller-operator-history
- **operator_operates_mine:** LORAINE QUARRY PRODUCTS → JOINER PIT; 2015-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bobby R  Nobles et al → LORAINE QUARRY PRODUCTS; 2015-10-03 to 2025-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Robert Aaron Myers et al → JOINER PIT; 2025-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert Aaron Myers et al → LORAINE QUARRY PRODUCTS; 2025-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert Matt Nobles et al → LORAINE QUARRY PRODUCTS; 2025-04-01 to current/open; source msha-controller-operator-history