# Relationship history for MSHA mine 2602383

Current hierarchy: **Royce  Iverson → Mt Moriah Stone Quarries LLC → Mt Moriah Quarries**

- 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:** Philip N  Levin → Mt Moriah Quarries; 1997-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Levin Stone Company Inc → Mt Moriah Quarries; 1999-05-01 to 2000-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Philip N  Levin → Levin Stone Company Inc; 1999-05-01 to 2000-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Mt Moriah Stone → Mt Moriah Quarries; 2000-04-01 to 2007-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Clay K  Iverson → Mt Moriah Quarries; 2000-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clay K  Iverson → Mt Moriah Stone; 2000-04-01 to 2007-06-11; source msha-controller-operator-history
- **operator_operates_mine:** Mt Moriah Stone Quarries LLC → Mt Moriah Quarries; 2007-06-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clay K  Iverson → Mt Moriah Quarries; 2007-06-12 to 2020-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Clay K  Iverson → Mt Moriah Stone Quarries LLC; 2007-06-12 to 2020-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Royce  Iverson → Mt Moriah Quarries; 2020-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Royce  Iverson → Mt Moriah Stone Quarries LLC; 2020-06-21 to current/open; source msha-controller-operator-history