Chief Executive John Lee says full investigation under way to determine why subcontract workers had ventured underground and whether safety rules followed.
HANOI: Several cases of gas poisoning due to whoopie cushion toys have been recorded among students in Tra Vinh, Vinh Long and Dong Thap provinces, raising alarms among authorities.
Chemistry labs just don’t smell like they used to. When I were a lad, chemistry lessons involved a procedure called Qualitative Inorganic Analysis. This involved bubbling hydrogen sulfide H2S, produced in a Kipp’s apparatus, through solutions to precipitate various metals group by group.