# Relationship history for MSHA mine 3101321

Current hierarchy: **Jerry Keith Adams → Tarheel Sand & Stone Inc. → Aaron Sand  Mine #68**

- 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:** L A Reynolds Company → Aaron Sand  Mine #68; 1950-01-01 to 1982-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Jon R  Reynolds → Aaron Sand  Mine #68; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jon R  Reynolds → L A Reynolds Company; 1950-01-01 to 1982-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Larco Construction Company Inc → Aaron Sand  Mine #68; 1983-01-01 to 1989-01-25; source msha-controller-operator-history
- **controller_controls_mine:** William G  Smith → Aaron Sand  Mine #68; 1983-01-01 to 1989-01-25; source msha-controller-operator-history
- **controller_controls_operator:** William G  Smith → Larco Construction Company Inc; 1983-01-01 to 1989-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Larco Construction Company → Aaron Sand  Mine #68; 1989-01-26 to 2004-05-24; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Aaron Sand  Mine #68; 1989-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Larco Construction Company; 1989-01-26 to 2004-05-24; source msha-controller-operator-history
- **controller_controls_mine:** Sandra  Beeman → Aaron Sand  Mine #68; 1992-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerry Keith Adams → Aaron Sand  Mine #68; 1995-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Aaron Sand & Gravel Div of WOT Inc → Aaron Sand  Mine #68; 2004-05-25 to 2014-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Sandra  Beeman → Aaron Sand & Gravel Div of WOT Inc; 2004-05-25 to 2014-02-09; source msha-controller-operator-history
- **operator_operates_mine:** Tarheel Sand & Stone Inc. → Aaron Sand  Mine #68; 2014-02-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry Keith Adams → Tarheel Sand & Stone Inc.; 2014-02-10 to current/open; source msha-controller-operator-history