# Relationship history for MSHA mine 2901130

Current hierarchy: **Jobeco Materials LLC → Jobe Materials LP → Mossman 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:** Rio Grande Rock Inc → Mossman Quarry; 1950-01-01 to 2005-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Wayne J  Muncrief → Mossman Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne J  Muncrief → Rio Grande Rock Inc; 1950-01-01 to 2005-06-28; source msha-controller-operator-history
- **controller_controls_mine:** Stanley P  Jobe et al → Mossman Quarry; 2005-04-26 to 2024-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Rio Grande Rock LLC → Mossman Quarry; 2005-06-29 to 2010-04-15; source msha-controller-operator-history
- **controller_controls_mine:** Sanchez Holdings LLC → Mossman Quarry; 2005-06-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sanchez Holdings LLC → Rio Grande Rock LLC; 2005-06-29 to 2010-04-15; source msha-controller-operator-history
- **operator_operates_mine:** Rio Grande Rock LLC → Mossman Quarry; 2010-04-16 to 2011-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Reuben B  Sanchez et al → Mossman Quarry; 2010-04-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reuben B  Sanchez et al → Rio Grande Rock LLC; 2010-04-16 to 2011-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Benjamin B  Sanchez et al → Rio Grande Rock LLC; 2010-04-16 to 2011-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Jobe Materials LP → Mossman Quarry; 2011-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley P  Jobe et al → Jobe Materials LP; 2011-07-01 to 2024-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Irene  Epperson et al → Jobe Materials LP; 2011-07-01 to 2024-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Jobeco Materials LLC et al → Mossman Quarry; 2024-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jobeco Materials LLC et al → Jobe Materials LP; 2024-07-15 to current/open; source msha-controller-operator-history