55/1 IF A CONFINED SPACE CONTAINS POISONOUS GAS OR NITROGEN, MEN CAN BE AFFECTED SEVERAL FEET AWAY FROM AN OPEN MAN-HOLE
55/2 A FILTER IS PLACED BETWEEN A COMPRESSOR AND THE LOW SUCTION PRESSURE TRIP – RESULT, A FIRE
55/3 FURNACE TUBES HAVE A LONG MEMORY
55/4 THE VENTING OF BATCH REACTORS
55/5 DIFFERENT SORTS OF “ICE”
55/6 FIRE PROTECTION OF STRUCTURES
55/7 WHAT THE LAW SAYS NO. 12
55/8 UNUSUAL ACCIDENTS No. 25
55/9 RECENT PUBLICATIONS