(S (S (NP (BASENP (DT A) (NN truck)) (VP (VP (VBG carrying) (NP (NP (BASENP (NN 35,500) (NNS pounds)) (PRN (LRB -LRB-) (BASENP (NN 16,100) (NN kg)) (RRB -RRB-))) (PP (IN of) (NP (BASENP (NNS explosives)) (VP (VBN used) (PP (IN in) (NP (BASENP (NN mining)) (CC and) (BASENP (JJ seismic) (NN exploration))))))))))) (VP (VP (VP (VBD overturned) (CC and) (VBD exploded)) (PP (IN on) (NP (BASENP (DT a) (JJ rural) (NN mountain) (NN section)) (PP (IN of) (NP (BASENP (NNP U.S.) (NNP Highway) (NN 6)) (PP (IN in) (NP (BASENP (NNP Utah) (POS 's)) (BASENP (JJ Spanish) (NNP Fork) (NNP Canyon))))))))) (BASENP (NNP Thursday) (NN afternoon)))) (PERIOD .))