# Relationship history for MSHA mine 0600596

Current hierarchy: **Strategic Commercial Realty Inc → Rawson Materials → PLANT 2**

- 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:** Richard  Rawson et al → PLANT 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R A Rawson Sand & Gravel Inc → PLANT 2; 1981-08-01 to 2001-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Rawson et al → R A Rawson Sand & Gravel Inc; 1981-08-01 to 2001-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Allan  Rawson et al → R A Rawson Sand & Gravel Inc; 1981-08-01 to 2001-04-11; source msha-controller-operator-history
- **controller_controls_mine:** O & G Industries Inc → PLANT 2; 2001-04-12 to 2025-04-16; source msha-controller-operator-history
- **operator_operates_mine:** West Putnam Sand & Gravel Inc → PLANT 2; 2001-04-12 to 2002-06-03; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey  Chattin → PLANT 2; 2001-04-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Chattin → West Putnam Sand & Gravel Inc; 2001-04-12 to 2002-06-03; source msha-controller-operator-history
- **operator_operates_mine:** Rawson Materials → PLANT 2; 2002-06-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** O & G Industries Inc → Rawson Materials; 2002-06-04 to 2025-04-16; source msha-controller-operator-history
- **controller_controls_mine:** Strategic Commercial Realty Inc → PLANT 2; 2025-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Strategic Commercial Realty Inc → Rawson Materials; 2025-04-17 to current/open; source msha-controller-operator-history