I think it would be a nice feature if this plugin can also search quarry's from players. I already managed to get this working, but I figured it might be interesting to post it here as well if it's something you decide to add to the plugin.

case "q":
case "quarry":
    var qq = Resources.FindObjectsOfTypeAll<MiningQuarry>().Where(x => x.OwnerID == targetID).ToList();
    if (qq.Count == 0)
    {
        returnstring += Lang("NoBuildings", player.UserIDString);
    }
    foreach(var q in qq)
    {
        if (q.canExtractLiquid)
            d.AddFind("Pumpjack", q.transform.position, string.Empty);
        else
            d.AddFind("Quarry", q.transform.position, string.Empty);
    }
    break;
default:​