# Relationship history for MSHA mine 2602708

Current hierarchy: **Karla  Sanchez → MAC Mining Group Inc → Mary Ann Canyon**

- 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:** Kapacke Mining LLC → Mary Ann Canyon; 2011-12-16 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Patrick M  Pizzoferrato Jr → Mary Ann Canyon; 2011-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick M  Pizzoferrato Jr → Kapacke Mining LLC; 2011-12-16 to 2015-12-31; source msha-controller-operator-history
- **operator_operates_mine:** D&S Resources → Mary Ann Canyon; 2016-01-01 to 2023-10-29; source msha-controller-operator-history
- **controller_controls_mine:** Patrick M  Pizzoferrato Jr → Mary Ann Canyon; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick M  Pizzoferrato Jr → D&S Resources; 2016-01-01 to 2023-10-29; source msha-controller-operator-history
- **operator_operates_mine:** MAC Mining Group Inc → Mary Ann Canyon; 2023-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Karla  Sanchez → Mary Ann Canyon; 2023-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Karla  Sanchez → MAC Mining Group Inc; 2023-10-30 to current/open; source msha-controller-operator-history