Order some kind of flying aircraft-ish thingy, with a obsidian or magma-proof metal/rock storage bay for transporting large quantities of magma
Send all engineers out in the new aircraft to scout for volcanoes.
Persuade the shuttle pilot by offering him a beer and getting him drunk enough to weasel as much information out of him as possible.
Do boring paperwork
Order some lights that can be put in the shaft.
Have 2 miners set up a sensor at the bottom of the shaft, and have 2 other miners begin to dig a main area at the bottom of the shaft.
Have 2 engineers develop a mining cart.
Have 2 engineers develop a powered heavy freight elevator.
Buy 10 Electronics, Plate Metal, and Mechanics.
Order 10 units of rubber.
"You want a carrier drone? With a heat resistance cargo bay? Well, did you really expect I'd have that with me every time? You can order it, I'll bring one next time. But it might cost quite some creds. And don't even think about paying a carrier
shuttle right now."
The engineers have a bad day. Not only is the whole area one big wasteland without even a hint of volcanism, they almost lost their way when the gps got dropped in the fine sand. When they come back, one of them is nearly dehydrated, but a night of resting and enough water will get him fit by tomorrow.
"And I sjay to 'im, you wont get mah monies, cusj y'know, I had themsj hid in mah shuttle, y'know, in the tiny sjpace-y under the sjteersjtuff, but youguysj are m'friendsj, y'know." The pilot is more than far gone when you put him in his bed for the night. Too bad the loading is automatic, you have no excuse to be in his shuttle, let alone a key.
((The difference between a shuttle and a drone, is, obviously, that a shuttle carries people.))
Lights are, luckily, standard issue, and strong static mining lamps are 50c each. You recon four will be enough for the main hall.
A sensor is placed in the shaft, and your miner start digging out a room to use as a main entrance area. Within a few hours, you have a nice place to start further mining from, and already you get a few readings of iron from the sensor - just 10 meters down.
When you go to the engineers' quarters, they are all gone - and when you ask x2yzh9, he tells you they are looking for volcanic activity in the vicinity.
And finally, you buy some stuff from the supply ship. Rubber is in cargo, so you can buy it directly.