# Relationship history for MSHA mine 3609839

Current hierarchy: **Paul B  Newhart III → HUNSINGER STONE → NEALY QUARRY**

- 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:** Terry B  Hunsinger → NEALY QUARRY; 2001-03-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hunsinger Stone → NEALY QUARRY; 2010-03-16 to 2014-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Terry B  Hunsinger → Hunsinger Stone; 2010-03-16 to 2014-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Hunsinger Stone → NEALY QUARRY; 2014-09-01 to 2016-01-11; source msha-controller-operator-history
- **controller_controls_mine:** Brian G  Hunsinger → NEALY QUARRY; 2014-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian G  Hunsinger → Hunsinger Stone; 2014-09-01 to 2016-01-11; source msha-controller-operator-history
- **operator_operates_mine:** Hunsinger Stone → NEALY QUARRY; 2016-01-12 to 2017-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Terry B  Hunsinger → Hunsinger Stone; 2016-01-12 to 2017-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Hunsinger Stone → NEALY QUARRY; 2017-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul B  Newhart III → NEALY QUARRY; 2017-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul B  Newhart III → Hunsinger Stone; 2017-05-09 to current/open; source msha-controller-operator-history