Show CORING MACHINE SHOWS UP DEFECTS IN STREET PAVING tr tra trL a L f s x 3 it ite M a ati e ti t tid id e AC kM i ig g si t Cr This ladies and gentlemen Is la 4 I cori coring g machine Just as an on apple corer bores out the center ot or an apple ap lo this machine bores bores out a B small round core etire from Crom a street et pavement pa The city of Springfield built this thia machine to make teals testa on au Its paving Th The cores corell produced by tho the machine showed that on ou 10 streets that were Inspected Impeded the concrete bAses buses were ero all under uDder specifications sp while the asphalt tops also showed x II great discrepancy r from the thickness required |