OVER HIS HEAD — This year's near-average wheat crop is expected to bring exceptional returns to some Prairie farmers, but the economics of agriculture are over the head of three-year-oldClaude Denis, os is the wheat in his father's field near St. Denis, northeast of Saskatoon. Swathing is now underway in almost all districts with combining general in many areas. (CP wirephoto)Convict still at largeABBOTSFORD, B.C. (CP) — A 28-year-old convicted murderer was still at large today after escaping from the me-dium-security Matsqui prison Monday morning. Four other men were caught hours after they escaped and within a few miles of the prison.Robert Allan Williams, formerly of Edmonton, was sentenced to life imprisonment in 1968 for non-capital murder He was convicted in Vancouver of murdering his fiancee, Linda Anne Wood.The five, working in the prison’s automobile body shop, stole a sedan and rammed it through the prison’s gate while a tower guard pumped four shots into the car.Donald Kennealy, 35, of Vancouver, serving 12 years for robbery, and Dennisproperty and possession of an offensive weapon, were the first to be recaptured.Hugo Leech, chief pilot of Northern Helicopters Ltd., said he saw one of the searching police dogmasters “waving like crazy” to indicate he had recaptured Kennealy and Smith.Mr. Leech, who piloted a helicopter during the search, said the convicts did not resist. But when you’re lying on the ground with a big German shepherd standing over you, you don’t do much.”Larry George Mason, 26, of Edmonton, serving two years and 10 months for theft, robbery and breaking and entering, and Harry Roy Cook, 23, of Victoria, serving six years and three months for breaking and entering, robbery and escaping custody, were recaptured a few hours after Kennealy and Smith.Matsqui director Jim Phelps said he believes Williams is unarmed, but should be considered dangerous.No one was injured in the escape.Alberta non-ops await settlement detailsThe prime minister’: followed a day of last-mi Mr. Munro to negotial Before meeting with n officials of the Associate Railway Unions, Mr. I emergency cabinet melt; continue for a few mor Mr. Trudeau agreed,: “there appeared to be sc a quick settlement.” “Tonight, that hope hi in a televised statemen Union sources said i that they had lower demands in a lengthy s Munro. But chief union ard Smith said CP Rai National Railways, tl railways involved, were had in the past on parli vention.At a news conference Mr. Munro was askec some non-ops in British not return to work if passed.The labor minister saic the men would continue “These workers are men who will defy theii .ia ii a _ n_ ' I____