I might get the fine mesh, since if you get the coarse mesh and it is too coarse, the reduction will be inordinately slow (I assume that is what the end use is). Either that or I would find a different supplier that specifies the mesh.

OTOH, 1.2 mm is only twice as large as .6 mm, so the reaction may not be that slow, and 'fine' may be too fine to proceed at a safe rate. In conclusion, I don't know. Just find a different supplier that lists the size.

....i've tried both the iron sawdust from the lathe at a machine shop and regular 60 mesh for the reduction of nitrosyrenes and they both seem to work the same....java

Oh yes, Java? do tell.

Will Fe/GAA reduce the olefin double bond as well as taking the nitro to the corresponding amine?

Toady is rather pleased actually...where nitrostyrenes are concerned. The crystallizing dish he used, although now empty got seized, he thinks, but his nitroethene sat out of sight, after he had, realising that over time, they perhaps are not too stable in air, transferred it all to a small glass vial. That sat safely away from the marauding trotters and greedy shit-nuzzling pink snouts. He had thought that nitroalkene was a gonner for sure, even though there is very little chance that the pigs are not going to be the usual harassing arsewipes, and simply drop the case without charge again. He had feared though they might try to use it as evidence of intent to manufacture if they tried bringing it to court. Not a huge quantity, some 3g of 2,5-dimethoxy-4-methyl-beta-nitroethene. But everyone knows what the filth are like when it comes to boosting their figures, and especially, when someone is on their unofficial bastards list.