Landman(oil worker)

A Landman or “Petroleum Landman”—in the United States and Canada—is an individual who performs various services for oil and gas exploration companies. According to the website of the American Association of Professional Landmen (AAPL), these services include but are not limited to: negotiating for the acquisition or divestiture of mineral rights; negotiating business agreements that provide for the exploration and/or development of minerals; determining ownership in minerals through the research of public and private records; reviewing the status of title, curing title defects and otherwise reducing title risk associated with ownership in minerals; managing rights and/or obligations derived from ownership of interests in minerals; and unitizing or pooling of interests in minerals.[1]

Reference

●Wikipedia「Landman（oil worker）」

https://en.wikipedia.org/wiki/Landman_(oil_worker)