This is another piece of background information taken from the Chronicles of the Endtimes by Adamiter Carom published in the year 2511

  this is a short Letter written by Borgio the Besieger prince of the Miragliano to Master engineer Holden 2492

  To my friend Master Holden,

  Greetings and salutations i was most grateful to receive the molds for the new bullet you recommended to me in your last letter to me and as far as my master sergeants in my regiment 'the marksmen of Miragliano' are concerned it has proven to increase the range of our rifles and their hitting power by two times over the previous balls!

  The other suggestions that you made during your last visit has proven to be most interesting such as the boiling of the water and the night soil treatment plant. They have proven most effective in reducing the incidence of belly flux among the urban poor. The priests have also been most helpful in spreading this new doctrine of hygiene your pet prelate introduced them to as well, a delightful change for them to help rather than to berate me for punishing my foes!

  The final matter is a request to send my alchemists the formula to that rat poison you sent my ratcatchers last month, it is most curious though there have been no mass killing of the vermin like you would have expected from a new poison? However there have been reports of Skaven fighting Skaven in the blighted marshes and one of a large explosion that backlit the night sky with a baleful green light!? The hated foe killing each other is to be encouraged, though i admit i am dying to know how and why?

  From Prince Borgio

  Letter written by Master Engineer Holden to Borgio 2492

  Greeting Borgio

  i hear that you have hung more traitors off those crazy towers you all dote on so much! I fear that in a few more years i will win my bet that you will topple one of them over! I will have a completely new type of rifle for your marksmen to test for me in the next few months; I think you will like it so much you will agree to my last price offer for your saltpeter! If your sergeants liked the new bullets they will love my 'Hammers'

  This text was taken from Royal Road. Help the author by reading the original version there.

  I will also be able to lower the price per ton for cast iron and the cost per barrel of good steel nails and screws, more good news for your merchants i hope?

  Those marshes will be the doom of your fair city my friend, i know you fear the expense but they must be drained and purged of their contamination or Sigmar will strike you all down for your ignorance i am afraid my friend you must save yourself!

  My colleague Ragmar Daggerson is a strange priest of Shallya i admit but for a former Norsican raider he has an agile mind inspired by his God and his nature! I am glad that you are no longer being abused quite so much my old friend!

  In relation to the final matter the formula is attached to this letter along with the exact methods of production though I must add it would be wise if you hire a Gold wizard of some repute before they attempt the process as it needs magical assistance and some very nasty compounds to achieve the desire product. However on the next supply barge to go through the big tunnel there will be a supply of several tons of the concentrated products along with instructions on how to cut it with chalk powder.

  In answer to your question in your letter it is not as such a poison, it is a most powerful drug that is similar but not the same as the warpstone snuff that the Grey Seers use to enhance their warpcraft. It is as addictive as the snuff but after prolonged use it induces extreme paranoia, loss of teeth, multiple organ failure then death. I knew that setting up those fake merchant caravans, so the Skaven could 'rob' them would work! Also make sure you openly transport the new product to those 'warehouses' I funded on the outskirts of the docks area!! I knew that the dammed Ratman would like my powders! I think that the green flash your witness saw was an attempt to produce some, especially as I left them the directions to a basic form of the powder a few weeks ago! This will hopefully disrupt the horrid creatures so you can crush them once and for all!

  Your faithful engineer Holden