Footage has emerged from China of two drain covers exploding into the sky reportedly because a boy threw lit matches down into the sewer. <br /><br />The CCTV footage, filmed in Luoyang, Henan Province on March 26, shows the two sewer lids shooting into the sky, prompting the boy and others to run away. <br /><br />The boy received minor injuries to his leg after being blown off his feet by the explosion.
