Sargın is specialized in deep shafts.
https://im-mining.com/2020/03/30/mining-contractor-sargin-maxes-development-metres-with-sandvik-dd320s-jumbo-at-esans-balya-mine/
...Plus calculates the path to automate the entire process, including distance and speed for optimal concrete layering.
https://www.mining-technology.com/future-of-mining/automation-laser-technology-a...
The Sirius Minerals engineering team in Germany for 60 m tall #Herrenknecht #Shaft Boring roadheader.
https://im-mining.com/2019/06/21/sirius-minerals-engineers-germany-shaft-boring-roadheader-tests/
...4) An evaluation of cutting head design of current tunnel Boring machines and suggestions to improve machine Performance, International Journal of Mining, Reclamation and Environment,...