A couple of links to really good information on how to fire cure tobacco.
http://www.ca.uky.edu/agc/pubs/agr/agr152/agr152.pdf
http://www.tobaccofarmquarterly.com/home.php?id=119&cid=645&article_id=10260
http://www.ca.uky.edu/agc/pubs/agr/agr152/agr152.pdf
http://www.tobaccofarmquarterly.com/home.php?id=119&cid=645&article_id=10260