![Oyu Tolgoi on Twitter: "OT holds certificates for Environmental management systems ISO 14001 and Health and Safety Management systems OHSAS 18001. OT has just received the updated certificates sent by the international Oyu Tolgoi on Twitter: "OT holds certificates for Environmental management systems ISO 14001 and Health and Safety Management systems OHSAS 18001. OT has just received the updated certificates sent by the international](https://pbs.twimg.com/media/DqWI8LCU0AAa1L4.jpg)
Oyu Tolgoi on Twitter: "OT holds certificates for Environmental management systems ISO 14001 and Health and Safety Management systems OHSAS 18001. OT has just received the updated certificates sent by the international
![Certificate of Hygiene & Sanitization post COVID 19 issued by Bureau Veritas (France). A company specialized in testing, inspection and certification founded in 1828. It operates in a variety of sectors, including Certificate of Hygiene & Sanitization post COVID 19 issued by Bureau Veritas (France). A company specialized in testing, inspection and certification founded in 1828. It operates in a variety of sectors, including](https://media-cdn.tripadvisor.com/media/photo-m/1280/1c/93/a0/5b/certificate-of-hygiene.jpg)
Certificate of Hygiene & Sanitization post COVID 19 issued by Bureau Veritas (France). A company specialized in testing, inspection and certification founded in 1828. It operates in a variety of sectors, including
![OSHA's Nationally Recognized Testing Laboratory (NRTL) Program - CSL | Occupational Safety and Health Administration OSHA's Nationally Recognized Testing Laboratory (NRTL) Program - CSL | Occupational Safety and Health Administration](https://www.osha.gov/sites/default/files/inline-images/csl.jpg)