Versions of Massachusetts General Laws ch. 146 sec. 53 - Necessity of licenses for operating hoisting machinery not run by steam; classification of hoisting machinery; exemptions on LawServer 2023 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses for operating hoisting machinery not run by steam; classification of hoisting machinery; exemptions 2022 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses for operating hoisting machinery not run by steam; classification of hoisting machinery; exemptions 2020 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses; classification of hoisting machinery; exemptions 2019 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses; classification of hoisting machinery; exemptions 2017 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses; classification of hoisting machinery; exemptions 2016 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses; classification of hoisting machinery; exemptions 2015 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses; classification of hoisting machinery; exemptions 2014 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses; classification of hoisting machinery; exemptions 2013 Massachusetts General Laws ch. 146 sec. 53 – Necessity of licenses; classification of hoisting machinery; exemptions 2009 Massachusetts General Laws ch. 146 sec. 53 – Necessity of license for operating hoisting machinery not run by steam; exemption