SEMENTCOV SERGEI. Project Management and Lean Manufacturing as the Basis of Operational Efficiency of Enterprises in the Mining and Metallurgical Industry. The American Journal of Engineering and Technology, [S. l.], v. 7, n. 09, p. 176–185, 2025. DOI: 10.37547/tajet/Volume07Issue09-12. Disponível em: https://www.theamericanjournals.com/index.php/tajet/article/view/6690. Acesso em: 9 may. 2026.