OPTIMIZING FUME EXTRACTION: AN EMPIRICAL STUDY ON THE PERFORMANCE OF LOCAL EXHAUST VENTILATION (LEV) FOR WELDING IN TECHNICAL VOCATIONAL LABORATORIES. LEX [Internet]. 2025 Oct. 3 [cited 2026 Jun. 12];23(S6):6285-9. Available from: https://lex-localis.org/index.php/LexLocalis/article/view/802764