# Relationship history for MSHA mine 0405573

Current hierarchy: **Scott Lothair Ritchie; Kiel Alexander Snyder → San Diego Mining Corp → TOURMALINE KING MINE**

- 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:** Scott L  Ritchie Et Al → TOURMALINE KING MINE; 1997-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southern California Gem Industries Inc. → TOURMALINE KING MINE; 2003-10-08 to 2017-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Scott L  Ritchie Et Al → Southern California Gem Industries Inc.; 2003-10-08 to 2017-06-10; source msha-controller-operator-history
- **controller_controls_operator:** Erik M  Cordova Et Al → Southern California Gem Industries Inc.; 2003-10-08 to 2017-06-10; source msha-controller-operator-history
- **controller_controls_mine:** Scott L  Ritchie → TOURMALINE KING MINE; 2015-08-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** San Diego Mining Company → TOURMALINE KING MINE; 2017-06-11 to 2026-01-15; source msha-controller-operator-history
- **controller_controls_operator:** Scott L  Ritchie → San Diego Mining Company; 2017-06-11 to 2026-01-15; source msha-controller-operator-history
- **operator_operates_mine:** San Diego Mining Corp → TOURMALINE KING MINE; 2026-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Scott Lothair Ritchie et al → TOURMALINE KING MINE; 2026-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott Lothair Ritchie et al → San Diego Mining Corp; 2026-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kiel Alexander Snyder et al → San Diego Mining Corp; 2026-01-16 to current/open; source msha-controller-operator-history