2023 Oregon Statutes 652.040 – Maximum working hours in mines; exceptions

2021 Oregon Statutes 652.040 – Maximum working hours in mines

2019 Oregon Statutes 652.040 – Maximum working hours in mines

2017 Oregon Statutes 652.040 – Maximum working hours in mines

2015 Oregon Statutes 652.040 – Maximum working hours in mines

2013 Oregon Statutes 652.040 – Maximum working hours in mines

2009 Oregon Statutes 652.040 – Maximum working hours in mines