You can read about Selective Laser Melting here on Wikipedia, which includes EBM.

FORBES: Sintering Your Way To Dental Implants And Hip Replacements

To be accurate, Lima is using a technique known as Electron Beam Melting (EBM) which is more advanced than your basic laser sintering method.

FORBES: Sintering Your Way To Dental Implants And Hip Replacements

Marine Ecosystems and Management, Vol.5, No 4, February-March 2012, an issue exploring the use of new media tools to broaden services to the fields of EBM and marine spatial planning.

UNESCO: CULTURE