# Relationship history for MSHA mine 1301053

Current hierarchy: **CRH PLC → Hallett Materials → PWP #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:** G A  Finley → PWP #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** G A Finley Inc → PWP #2; 1979-11-01 to 1989-01-31; source msha-controller-operator-history
- **controller_controls_operator:** G A  Finley → G A Finley Inc; 1979-11-01 to 1989-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Mid America Materials Company → PWP #2; 1986-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hallett Materials → PWP #2; 1989-02-01 to 1999-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Mid America Materials Company → Hallett Materials; 1989-02-01 to 1999-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Hallett Materials Inc → PWP #2; 1999-04-01 to 2008-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Rasmussen Group Inc → PWP #2; 1999-04-01 to 2001-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Rasmussen Group Inc → Hallett Materials Inc; 1999-04-01 to 2001-08-10; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → PWP #2; 2001-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Hallett Materials Inc; 2001-08-11 to 2008-01-02; source msha-controller-operator-history
- **operator_operates_mine:** Hallett Materials → PWP #2; 2008-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → PWP #2; 2008-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Hallett Materials; 2008-01-03 to current/open; source msha-controller-operator-history