SG11202111608VA
(en )
2021-11-29
Method for reconstructing shield tunnel for mining construction
BR112012021093A2
(en )
2016-05-17
underground mining
ZA202102741B
(en )
2022-10-26
Frozen aquifer-based method for underground longwall face coal mining under water-containing condition
ZA201906164B
(en )
2021-01-27
Grading method for water-preserving coal mining mine/mine area
GB202005577D0
(en )
2020-06-03
An underground deep soil sampling equipment
ZA202209148B
(en )
2022-12-21
Grouting method for reinforcing surrounding rock of three-soft mining roadway
GB201902094D0
(en )
2019-04-03
Improvements relating to underground mining
EP4026983C0
(en )
2023-11-08
Tunnel boring system
ZA202201004B
(en )
2022-05-25
Novel surrounding rock excavation device for weak surrounding rock tunnels
ZA202302570B
(en )
2023-05-31
Combined mining method for underground mines
EP3997373C0
(en )
2023-09-27
Spoil pipe for tunnel boring machine
EP3998395A4
(en )
2022-07-27
Design method for mine without leaving coal pillar and without roadway tunneling
ZA202110931B
(en )
2022-03-30
Surrounding rock tunnel tunneling construction method
EP4085182C0
(en )
2024-03-20
Tunnel boring machine
GB202008460D0
(en )
2020-07-22
An equipment for automatically mining coal
ZA202110936B
(en )
2022-03-30
Blasting technology for hard rock multi-arch tunnels
ZA202105618B
(en )
2021-09-29
Blasting apparatus for rock under mine
GB2592865B
(en )
2022-06-15
Human interface operating device of an underground mining machine
ZA202213114B
(en )
2023-02-22
Mine underground filling mortar
CA222181S
(en )
2024-04-12
Drill rig for mining
GB201800899D0
(en )
2018-03-07
A tunnel boring apparatus, a tunnel boring machine, and a method of boring tunnels
KR102118636B9
(en )
2023-06-14
Method for construction for underground tunnel
ZA202301416B
(en )
2023-05-31
Grooving sampling device for geological tunnels
AU2020902027A0
(en )
2020-07-02
Navigation of an underground mining machine
GB2611057B
(en )
2024-07-24
Rock disintegration device