Bumar is a private company set up in 1997 and specialising in the quarrying, processing, and sale of natural stone siding materials – marble, limestone, granite, etc.

In 2017, in collaboration with Ilindenski mramor, the company was granted a concession contract for quarrying for stone siding materials – marble from the Ilindentsi Field, Central 1 Section, located in the territory of the village of Ilindentsi, Municipality of Strumyani, District of Blagoevgrad. Bumar conducts geological surveys in collaboration with Ilindenski mramor, and has a quarry for barite, limestone Gorna Kremena, etc.