Emmanuel kanvole Emmanuel

Obuasi

Nangialai Assadi

Kabul

ABHIJIT PRADHAN

Bhubaneswar

Lucas Lopes

Belo Horizonte/ Minas Gerais

Tom Perry

Romford

Maciej Hawrylak

Gliwice

mining geotechnic company

kabul

Hamilton Rocha

Belo Horizonte, Minas Gerais

Mateusz Jedynak

Nysa

Lawrence Ndere

Harare

Jorge Castillo Luco

Santiago

Vitaliy Gomboev

Ulan-Ude

Saikumar Shanmugam

Maharashtra

Kam kiyum

Qld

Mohammad Hassan

Egypt

Shahid Khan

Azad jamu and Kashmir Pakistan

Aaron Frost OHST, CSO

Britsh Columbia

Mukhar Chakma

Dhaka

DANTE CALLUPE

LIMA

Sriniwas Ghate

Mumbai

Felix Nti-Sarpong

Kumasi

Beza Mwanza

Lusaka

Ioannis Glynos

Athens,Attica

Matt T. Zimmerman

Bratislava