I've been regularly active on the NMRIH servers for the past 2 months. However, I haven't seen a mod on those servers during my playtime. I would occasionally run into AFKs or griefers and usually the voting system is inefficient at kicking these AFKers/grifers. Rounds would be held up, and lead to players leaving the server. Without any active mods to remedy the situation, it kills the server. If there are any applications open for mod on those servers, I would love to apply.
Also on a side note, I don't want to name names, but there are a few active users on the servers that grief as a group. Block doorways, prevent others from reaching the extraction point, and vote kicking any users who oppose them.