(S (S (PP (NP (PP (BASENP (NN 組合)) (IN の)) (NN 推定)) (INP (IN に) (VB よる) (INCON と))) (COMMA 、) (S (PP (PP (BASENP (NN ２００６)) (IN から)) (PP (BASENP (NN ２００７) (NN 年)) (IN に))) (S (PP-SBJ (NP (PP (BASENP (QP (RB ほぼ) (NN ２５０)) (NN 人)) (IN の)) (NN 鉱夫)) (IN が)) (VP (PP (BASENP (NN 事故)) (IN で)) (VP (VBV 死ん) (VP (MD だ))))))) (PERIOD 。))
組合 の 推定 に よる と 、 ２００６ から ２００７ 年 に ほぼ ２５０ 人 の 鉱夫 が 事故 で 死ん だ 。
According to union estimations , between 2006 and 2007 nearly 250 miners died in accidents .