(mining) gangue

ore

mine (place from which ore is extracted)

To perform; to do; to conduct oneself; to carry out.

separation / segregation / selectivity or sensitivity in a radio or similar device for certain frequencies

to separate / to segregate

pulse / chain of mountains / blood vessels / hope

(especially of romance) showing promise for further development

pulse / vein / something that continues (in a straight line, path) / connection

work; operation