The supplies for the Hallow ritual can be requisitioned, but it'll cause about a 24 hour delay.  The research for the ritual will take 5 hours, although if the entire party teamed up on it, they could complete the research in about 2 hours.   Reaching Irontown by lightning rail would take 48 hours.  You could also buy a teleport spell for 3,500 gp to reach there immediately.<br/><br/>The stock of shadows the undead had appears to be gone (that's what caused most of the initial 75 casualties) although they have plenty more incorporeals.  The seals will most likely hold for another week at least, unless the undead have a reason to deploy all of their incorporeal forces at once.  Count Vedim Ir'Omik, meanwhile, will reach Sharn in two weeks.