Leasing/Drilling

Just a general newbie question. I wish I knew more about all of this…

We leased our minerals through Lone Tree / Petro Hunt earlier this year. We were previously leased with Diamond Resources in 2013 and 2017. Yesterday I received a phone call from a gentleman representing Diamond Resources asking for permission to survey one of our parcels of property. He said they would be doing that in the next week and depending on various factors, would be approaching us with paperwork to drill in the near future. We gave our verbal permission for them to survey and then hung up. It didn’t dawn on me until afterwards that Diamond Resources no longer held our mineral lease. But they would know that, correct? So I guess my question is “What are they up to?” Thanks to anyone who can shed a little light on this matter.