Grapevine

By DAVID ELLIS/

THANKS, BUT OUR MACHINES STILL WORK. South Korean authorities continue to uncover secret invasion tunnels believed to have been dug by North Korea under the Demilitarized Zone that has separated the two republics since 1953. So when South Korea's Hyundai Construction Co. announced that it was making a donation to North Korea, the nature of the benevolence raised some eyebrows: a bulldozer, an excavator, a forklift, a loader and a dump truck. The North Koreans passed on the offer.

With reporting by David E. Thigpen