# Relationship history for MSHA mine 3401860

Current hierarchy: **James R  Parker → PARKER & SONS STONE LLC → Quarry #4**

- 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:** Joyce Parker Stone Company LLC → Quarry #4; 2001-04-01 to 2005-08-01; source msha-controller-operator-history
- **controller_controls_mine:** James R  Parker → Quarry #4; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James R  Parker → Joyce Parker Stone Company LLC; 2001-04-01 to 2005-08-01; source msha-controller-operator-history
- **controller_controls_mine:** James R  Parker → Quarry #4; 2005-02-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** PARKER & SONS STONE LLC → Quarry #4; 2005-08-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James R  Parker → PARKER & SONS STONE LLC; 2005-08-02 to current/open; source msha-controller-operator-history