From the q3 07 report

http://www.tyhee.com/financial/documents/3rdquarter.pdf

Share purchase warrants outstanding at August 31, 2007 are as follows:
 
Number of    Class of       Exercise
Warrants  Shares  Expiry date  Price
(1)
425,333  Common    December 1, 2007    $0.15
2,750,000    Common    December 21, 2007    $0.45
1,825,000    Common    December 21, 2007    $0.65
255,500    Common    December 21, 2007    $0.51
1,583,500    Common    January 7, 2008    $0.50
2,418,000    Common    January 13, 2008    $0.45
155,312    Common    January 17, 2008    $0.45
71,000    Common    January 17, 2008    $0.45
600,000    Common    January 31, 2008    $0.30
8,646,352    Common    March 8, 2008    $0.28
1,821,712   Common    April  13,  2008    $0.28