# Relationship history for MSHA mine 3304433

Current hierarchy: **CRH PLC → Shelly Materials Inc. → Reedsville 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:** Jon P Thompson et al → Reedsville Pit; 1987-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Letart Corp → Reedsville Pit; 1999-04-01 to 2000-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Jon P Thompson et al → Letart Corp; 1999-04-01 to 2000-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Roy  Thompson et al → Letart Corp; 1999-04-01 to 2000-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Jaymar Inc. → Reedsville Pit; 2000-02-01 to 2019-12-12; source msha-controller-operator-history
- **controller_controls_mine:** Jay  Hall Jr → Reedsville Pit; 2000-02-01 to 2011-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Jay  Hall Jr → Jaymar Inc.; 2000-02-01 to 2011-03-07; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Reedsville Pit; 2000-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Penny M  Preston → Reedsville Pit; 2011-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Penny M  Preston → Jaymar Inc.; 2011-03-08 to 2019-12-12; source msha-controller-operator-history
- **operator_operates_mine:** Jaymar LLC → Reedsville Pit; 2019-12-13 to 2026-03-08; source msha-controller-operator-history
- **controller_controls_mine:** Marlene  Hall → Reedsville Pit; 2019-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marlene  Hall → Jaymar LLC; 2019-12-13 to 2026-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Shelly Materials Inc. → Reedsville Pit; 2026-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Shelly Materials Inc.; 2026-03-09 to current/open; source msha-controller-operator-history