# Relationship history for MSHA mine 5001759

Current hierarchy: **Paul  Sayer; Lloyd  Magnuson; Robert  Magnuson → Dry Gulch LLC → Dry Gulch LLC**

- 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:** Anderson & Sons Mining → Dry Gulch LLC; 2003-01-07 to 2014-07-20; source msha-controller-operator-history
- **controller_controls_mine:** Ralph  Anderson → Dry Gulch LLC; 2003-01-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ralph  Anderson → Anderson & Sons Mining; 2003-01-07 to 2014-07-20; source msha-controller-operator-history
- **operator_operates_mine:** Anderson & Sons LLC → Dry Gulch LLC; 2014-07-21 to 2018-06-04; source msha-controller-operator-history
- **controller_controls_mine:** Ralph S  Anderson et al → Dry Gulch LLC; 2014-07-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ralph S  Anderson et al → Anderson & Sons LLC; 2014-07-21 to 2018-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Irene A  Anderson et al → Anderson & Sons LLC; 2014-07-21 to 2018-06-04; source msha-controller-operator-history
- **operator_operates_mine:** Dry Gulch LLC → Dry Gulch LLC; 2018-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Paul  Sayer et al → Dry Gulch LLC; 2018-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Sayer et al → Dry Gulch LLC; 2018-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lloyd  Magnuson et al → Dry Gulch LLC; 2018-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Magnuson et al → Dry Gulch LLC; 2018-06-05 to current/open; source msha-controller-operator-history