# Relationship history for MSHA mine 4104461

Current hierarchy: **Daniel R  Wetzel; James J  Davis → Allen Butler Const., Inc. → Butler Sand and Gravel**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **controller_controls_mine:** Allen  Butler → Butler Sand and Gravel; 2000-06-01 to 2017-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Quitaque Sand & Gravel → Butler Sand and Gravel; 2003-12-03 to 2008-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Roy G  Stephens → Butler Sand and Gravel; 2003-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roy G  Stephens → Quitaque Sand & Gravel; 2003-12-03 to 2008-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Allen Butler Const., Inc. → Butler Sand and Gravel; 2008-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen  Butler → Allen Butler Const., Inc.; 2008-08-24 to 2017-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Daniel R  Wetzel et al → Butler Sand and Gravel; 2017-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Daniel R  Wetzel et al → Allen Butler Const., Inc.; 2017-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James J  Davis et al → Allen Butler Const., Inc.; 2017-03-01 to current/open; source msha-controller-operator-history