The description say it drains 200 pts/sec, but it is actually 200pts/0.5sec so 400pts/sec
so
> Places a mine, burning 200 energy per second of enemies in range, then explodes dealing 4 EM damage for each point of energy burned.
should be
> Places a mine, burning 400 energy per second of enemies in range, then explodes dealing 4 EM damage for each point of energy burned.