Sometimes, the humans or Immortals targeted for extermination or soul extraction were on the other side of the world.
If Tamer didn't find the tidbit of history from the time-before-time about forced soul extraction, the plan was never going to have more than a five percent chance of working, even with Wynn.
The resulting compound, nickel carbonyl, which was described to the Chemical Society in 1890, is both formed and decomposed within a very moderate range of temperature, and on this fact he based a successful process for the extraction of nickel from its ores.
Several companies are devoting all their energies to zinc extraction, and the output is now equal to about 5% of the world's production.
The extraction (as is the case with all the rare earths) is a matter of great difficulty.