# Relationship history for MSHA mine 3102121

Current hierarchy: **Jeffrey  Goodman → Cumberland Gravel and Sand → Norman Sand Mine**

- 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

- **controller_controls_mine:** Jeffrey  Goodman et al → Norman Sand Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D & J Materials Inc → Norman Sand Mine; 1997-10-01 to 2004-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Parsons → Norman Sand Mine; 1997-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Parsons → D & J Materials Inc; 1997-10-01 to 2004-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Norman Sand Mine; 2001-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** RMC Mid-Atlantic, LLC → Norman Sand Mine; 2004-04-23 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_mine:** RMC Group PLC → Norman Sand Mine; 2004-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RMC Group PLC → RMC Mid-Atlantic, LLC; 2004-04-23 to 2005-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials LP → Norman Sand Mine; 2006-01-01 to 2010-01-03; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials LP; 2006-01-01 to 2010-01-03; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Norman Sand Mine; 2008-12-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials Florida LLC → Norman Sand Mine; 2010-01-04 to 2010-11-10; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials Florida LLC; 2010-01-04 to 2010-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Gravel and Sand → Norman Sand Mine; 2010-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey  Goodman et al → Cumberland Gravel and Sand; 2010-11-11 to current/open; source msha-controller-operator-history