# Relationship history for MSHA mine 4104190

Current hierarchy: **Ryan  Mays → El Prado Stone Management LLC → Stone Source**

- 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:** I-10 Building Materials Stone Source Inc → Stone Source; 2000-01-01 to 2017-04-17; source msha-controller-operator-history
- **controller_controls_mine:** Craig  Leeder → Stone Source; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig  Leeder → I-10 Building Materials Stone Source Inc; 2000-01-01 to 2017-04-17; source msha-controller-operator-history
- **controller_controls_mine:** George  Karutz et al → Stone Source; 2015-01-29 to 2017-04-17; source msha-controller-operator-history
- **operator_operates_mine:** El Prado Stone Management LLC → Stone Source; 2017-04-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** George  Karutz et al → El Prado Stone Management LLC; 2017-04-18 to 2017-04-17; source msha-controller-operator-history
- **controller_controls_operator:** Vannie  Collins et al → El Prado Stone Management LLC; 2017-04-18 to 2017-04-17; source msha-controller-operator-history
- **controller_controls_mine:** George  Karutz et al → Stone Source; 2017-04-18 to 2020-04-16; source msha-controller-operator-history
- **controller_controls_operator:** George  Karutz et al → El Prado Stone Management LLC; 2017-04-18 to 2020-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Craig  Leeder et al → El Prado Stone Management LLC; 2017-04-18 to 2020-04-16; source msha-controller-operator-history
- **controller_controls_operator:** Meade  Flavin et al → El Prado Stone Management LLC; 2017-04-18 to 2020-04-16; source msha-controller-operator-history
- **controller_controls_mine:** George  Karutz et al → Stone Source; 2020-04-17 to 2023-02-08; source msha-controller-operator-history
- **controller_controls_operator:** George  Karutz et al → El Prado Stone Management LLC; 2020-04-17 to 2023-02-08; source msha-controller-operator-history
- **controller_controls_operator:** Meade  Flavin et al → El Prado Stone Management LLC; 2020-04-17 to 2023-02-08; source msha-controller-operator-history
- **controller_controls_mine:** Ryan  Mays → Stone Source; 2023-02-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan  Mays → El Prado Stone Management LLC; 2023-02-09 to current/open; source msha-controller-operator-history