# Relationship history for MSHA mine 0102086

Current hierarchy: **Jerry  Lewis; Brad  Stevens → A Team Mining LLC → ROCK PRODUCTS QUARRY**

- 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:** Rock Products Inc → ROCK PRODUCTS QUARRY; 1979-01-01 to 2007-06-11; source msha-controller-operator-history
- **controller_controls_mine:** Leroy  Blair → ROCK PRODUCTS QUARRY; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Leroy  Blair → Rock Products Inc; 1979-01-01 to 2007-06-11; source msha-controller-operator-history
- **operator_operates_mine:** ROCK PRODUCTS, LLC → ROCK PRODUCTS QUARRY; 2007-06-12 to 2012-10-22; source msha-controller-operator-history
- **controller_controls_mine:** Ross L  Beamon et al → ROCK PRODUCTS QUARRY; 2007-06-12 to 2010-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Ross L  Beamon et al → ROCK PRODUCTS, LLC; 2007-06-12 to 2010-07-14; source msha-controller-operator-history
- **controller_controls_operator:** John R  Moody et al → ROCK PRODUCTS, LLC; 2007-06-12 to 2010-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Peter  Dvorak et al → ROCK PRODUCTS QUARRY; 2010-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter  Dvorak et al → ROCK PRODUCTS, LLC; 2010-07-15 to 2012-10-22; source msha-controller-operator-history
- **controller_controls_operator:** George E  Ingram et al → ROCK PRODUCTS, LLC; 2010-07-15 to 2012-10-22; source msha-controller-operator-history
- **operator_operates_mine:** A Team Mining LLC → ROCK PRODUCTS QUARRY; 2012-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry  Lewis et al → ROCK PRODUCTS QUARRY; 2012-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Lewis et al → A Team Mining LLC; 2012-10-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Stevens et al → A Team Mining LLC; 2012-10-23 to current/open; source msha-controller-operator-history