Unfortunately, I do not have access to glycerine price...

Unfortunately, I do not have access to glycerine price information but to quote from their ASX release May 6:

"Production is being ramped up to 900 tonnes from May 2008 onwards. Mission has secured adequate supplies of crude glycerine to support this interim strategy. The production of purified glycerine at full capacity based on current economics will allow the company's refinery operations to remain profitable..."

So this statement together with the increased diesel price suggests omproving trading conditions.