Sir; Am I the only reader of The Grocer who each time he reads a letter from Anne Palmer of Wolverhampton, expects that the following week there will be another letter from Tony Combes of Mosanto complaining "life's not fair". To answer to his last letter (The Grocer, May 6, p18) we wouldn't have to allow 0.1% of GM material if his and other firms had not mixed the US crop in the first place. May I suggest Combes' time would be better spent trying to recompense the food industry for the cost of having to screen for GM material in everything from citric acid to xanthan gum. James William Via e-mail {{LETTERS }}