"矿山勘测" can be translated into English as "mine surveying" or "mineral exploration and surveying" (the latter being a more detailed expression that also encompasses exploration work).
"Mine surveying" is a more concise and commonly used term in the mining industry, referring specifically to the measurement and mapping activities conducted in mines.
"Mineral exploration and surveying" provides a broader context, including not only the surveying aspect but also the initial exploration work to identify mineral resources.
In most cases, "mine surveying" is sufficient to convey the meaning of "矿山勘测".