SYED wrote:SAy some poisonous planet while deadly, could be very profitable, so any long term population would choose to give their kids a way to deal with the long term issue of exposure. Grayson while deal, is an excellent osurce of those deadly materials, so easily produced for industry.
And unless something particularly screwy is going on the rest of the system will also be rich in heavy elements so they can be obtained by conventional asteroid mining without having to even touch the planet. If for some reason you do have to mine the planet then there is no need to have a long term population on planet, and even if you do modern Honorverse technology is quite capable of providing large scale high quality sealed habitats (eg the Skydomes on Grayson)
ETA: It is also questionable if it is worth colonizing a planet or even just going to a different system for particular elements, unless they are needed in large quantities the incidental production from normal asteroid mining is almost certainly going to fill the demand.