The 'd' stands for "drain", which probably doesn't help much. It just refers to the amount of current flowing into the drain terminal and out the source terminal.
The power dissipation of a resistance is I^2 * R, so in your case it would be 70*70*0.0115=56.4W. Way too much. It will get hot for about 2 seconds then catch on fire.
In that current domain you can:
1) Get a MUCH lower on-resistance MOSFET (like 1mohm instead of 11.5mohms), and use big thick wires all over the place
2) Put MOSFET's in parallel (e.g., 10 MOSFET's at 11.5mohms each is like 1 MOSFET at 1.5mohms....though you have to be careful to make sure they all switch on and off at exactly the same time)
3) Use an IGBT
4) Use a contactor
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