Improvements in appliances to supply electric energy in an explosive atmosphere in power, to mining machines that have a device for captation to receive electrical energy. (Machine-translation by Google Translate, not legally binding)
ES457290A3
Improvements in mining exploitation facilities. (Machine-translation by Google Translate, not legally binding)
US4155597A
Mineral winning/detaching machines
ZA7604331B
Improvements in or relating to mining machine and mine installations
DE2630909A1
Terminal block for deflectable cable joints in mining equipment - has elongated connector with slit and ends supporting jaws to hold cable ends