New and updated features of this title Cross-discipline content updates REVISED: The 4th Edition provides a modernized curriculum, in addition to new content. REVISED: Level 4 now combines Levels 4 and 5 of the previous editions of NCCER's Industrial Maintenance Mechanic curriculum, streamlining the final portion of the training. REVISED: The new edition leverages updated NCCER curricula from other disciplines, including modules from Millwright and Boilermaking. UPDATED: NCCER Module 32501, Advanced Towers and Vessels, was overhauled to highlight new technology and to narrow in on the work of an industrial maintenance mechanic. Enhanced pedagogy ENHANCED: Improved images appear throughout. Images sit beside text descriptions and procedural steps to help trainees better absorb information. UPDATED: Learning objectives have been updated to align with this edition's modernized curriculum. Objectives list the skills and knowledge needed to successfully complete the module.