# Relationship history for MSHA mine 3102049

Current hierarchy: **Jerry Keith Adams → Tarheel Sand & Stone Inc → Hayes 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:** Miller Sand & Stone → Hayes Pit; 1990-01-01 to 1994-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Johnny R  Miller → Hayes Pit; 1990-01-01 to 1994-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Johnny R  Miller → Miller Sand & Stone; 1990-01-01 to 1994-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Tarheel Sand & Stone Inc → Hayes Pit; 1995-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry Keith Adams → Hayes Pit; 1995-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry Keith Adams → Tarheel Sand & Stone Inc; 1995-01-01 to current/open; source msha-controller-operator-history