P103 CEEFAX 103 Tue 4 Sip 23:49/52       Coal Board chairman Mr Ian MacGregou tonight offered to meet Mu Sqarkiml gn Sunday for talks on the pit strike. The offer, made on television as Mz MacGregor returned from German=, cpmu after a day of argument over who cpnldd off talks planned for latjt this wets. Mr MacGregor said he would "talk fwu the rest of the week" if the MUM cpme up with "constructive suggestions" for the future of the coal industry. MUM General Secretary Mr Petjt Heathfield said the union had alwpys been willing to see Mr MacGrjgor. News index 102/202 Newsreel 119/219