# Relationship history for MSHA mine 3003158

Current hierarchy: **Graymont Ltd → GRAYMONT MATERIALS (NY) INC. → MOOERS QUARRY**

- 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:** Rogers Stone Products Inc → MOOERS QUARRY; 1996-05-01 to 2000-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Janice M  Rogers → MOOERS QUARRY; 1996-05-01 to 2000-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Janice M  Rogers → Rogers Stone Products Inc; 1996-05-01 to 2000-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Graymont Ltd → MOOERS QUARRY; 2000-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Rogers Stone Products Inc → MOOERS QUARRY; 2000-06-30 to 2002-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Graymont Ltd → MOOERS QUARRY; 2000-06-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Graymont Ltd → Rogers Stone Products Inc; 2000-06-30 to 2002-07-11; source msha-controller-operator-history
- **operator_operates_mine:** Mooers Quarry → MOOERS QUARRY; 2002-07-12 to 2004-07-05; source msha-controller-operator-history
- **controller_controls_operator:** Graymont Ltd → Mooers Quarry; 2002-07-12 to 2004-07-05; source msha-controller-operator-history
- **controller_controls_mine:** Graymont Ltd → MOOERS QUARRY; 2004-06-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** GRAYMONT MATERIALS (NY) INC. → MOOERS QUARRY; 2004-07-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Graymont Ltd → GRAYMONT MATERIALS (NY) INC.; 2004-07-06 to current/open; source msha-controller-operator-history