# Relationship history for MSHA mine 2602691

Current hierarchy: **Hecla Mining Company → Klondex Gold & Silver Mining Company → Fire Creek**

- 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:** Ronald W  Guill → Fire Creek; 1988-04-01 to 2011-01-27; source msha-controller-operator-history
- **controller_controls_mine:** Keith  Jones → Fire Creek; 2011-01-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Small Mine Development LLC → Fire Creek; 2011-04-15 to 2012-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Jones → Small Mine Development LLC; 2011-04-15 to 2012-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Ronald W  Guill → Small Mine Development LLC; 2011-04-15 to 2011-01-27; source msha-controller-operator-history
- **operator_operates_mine:** Klondex Gold & Silver Mining Company → Fire Creek; 2012-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Klondex Mines Ltd → Fire Creek; 2012-11-13 to 2018-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Klondex Mines Ltd → Klondex Gold & Silver Mining Company; 2012-11-13 to 2018-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Hecla Mining Company → Fire Creek; 2018-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hecla Mining Company → Klondex Gold & Silver Mining Company; 2018-07-23 to current/open; source msha-controller-operator-history