2024 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week

2023 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week

2020 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week

2018 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week

2016 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week

2015 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week

2014 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week

2013 Ohio Code 5.2274 – Ohio Aggregates and Industrial Minerals Awareness Week