[Suicide Junkie]

1.5.3 Only one vehicle per location will actually mine the location. If you put one robo-minerals satellite and one robo-radioactives satellite at the same location, only the first one placed will actually generate resources. However, if you build a base with different mining components (ie 6 robo-minerals, 4 robo-radiactives, 2 robo-organics for example) all mining components on the station will produce, (but only 1 base per location).(Gandalph)

The satellite facts are wrong.

1.5.3.1 Only one Ship or Base can mine a location at once. Whichever is placed first will mine.
All mining components on a ship or base will produce, and the value of the planet or asteroids will drop exactly 1% per turn no matter how many mining components you have.

1.5.3.2 In a stack of satellites, up to three satellites can mine, provided they all have robo-miners working on different resources.
Three mineral miner sats will produce the same amount of minerals as one mineral miner sat. A mineral miner sat plus a radioactives miner sat can both work on the same location at the same time, producing the full amount of both resources.

1.5.4.2 In order to make your mining operations Last longer, use only one type of robo miner per base. If all of your robo miners are Mineral miners, the organics and radioactives value of the planet or asteroids will not decrease. When the minerals are gone, you can retrofit the base to an organics or radioactives miner, and continue production for many years to come.