# Relationship history for MSHA mine 1901142

Current hierarchy: **Matthew  White → Swift River Stone LLC → Swift River Stone**

- 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:** Swift River Stone → Swift River Stone; 2005-04-28 to 2015-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Jim E White → Swift River Stone; 2005-04-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jim E White → Swift River Stone; 2005-04-28 to 2015-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Arrowhead Stone, Inc → Swift River Stone; 2015-02-01 to 2023-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Joseph T  Joyce et al → Swift River Stone; 2015-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph T  Joyce et al → Arrowhead Stone, Inc; 2015-02-01 to 2023-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Jill M  Hazen et al → Arrowhead Stone, Inc; 2015-02-01 to 2023-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Swift River Stone LLC → Swift River Stone; 2023-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Matthew  White → Swift River Stone; 2023-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew  White → Swift River Stone LLC; 2023-07-01 to current/open; source msha-controller-operator-history