# Relationship history for MSHA mine 3609111

Current hierarchy: **Jose M  Canales → C & K Stone → Konopka 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:** Matthew R  Mc Clain → Konopka Mine; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Endless Mtn. Fieldstone Supply → Konopka Mine; 2002-07-30 to 2006-10-11; source msha-controller-operator-history
- **controller_controls_operator:** Matthew R  Mc Clain → Endless Mtn. Fieldstone Supply; 2002-07-30 to 2006-10-11; source msha-controller-operator-history
- **operator_operates_mine:** Pensak Stone → Konopka Mine; 2006-10-12 to 2007-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Scott  Pensak → Konopka Mine; 2006-10-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott  Pensak → Pensak Stone; 2006-10-12 to 2007-08-07; source msha-controller-operator-history
- **operator_operates_mine:** C & K Stone → Konopka Mine; 2007-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jose M  Canales → Konopka Mine; 2007-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose M  Canales → C & K Stone; 2007-08-08 to current/open; source msha-controller-operator-history