# Relationship history for MSHA mine 2601815

Current hierarchy: **Pearson R W → Mojave Gold Inc → Techattecup**

- 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:** Western Exploration & Mining Corp → Techattecup; 1982-08-01 to 1987-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Schellenbach Peter → Techattecup; 1982-08-01 to 1987-10-25; source msha-controller-operator-history
- **controller_controls_operator:** Schellenbach Peter → Western Exploration & Mining Corp; 1982-08-01 to 1987-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Canyon Development & Mining Inc → Techattecup; 1987-10-26 to 1988-09-08; source msha-controller-operator-history
- **controller_controls_mine:** Clouse Larry P → Techattecup; 1987-10-26 to 1988-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Clouse Larry P → Canyon Development & Mining Inc; 1987-10-26 to 1988-09-08; source msha-controller-operator-history
- **operator_operates_mine:** Mojave Gold Inc → Techattecup; 1988-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pearson R W → Techattecup; 1988-09-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pearson R W → Mojave Gold Inc; 1988-09-09 to current/open; source msha-controller-operator-history