 Based on how sensitive monkeys were to the venom , Whaler ( 1971 ) estimated 14 mg of venom would be enough to kill a human being : equivalent to 0 @.@ 06 ml of venom , or 1 / 50 to 1 / 1000 of what can be obtained in a single milking . Marsh and Whaler ( 1984 ) wrote that 35 mg ( 1 / 30 of the average venom yield ) would be enough to kill a man of 70 kilograms ( 150 lb ) . Branch ( 1992 ) suggested that 90 – 100 mg would be fatal in humans . Due to the rarity of these type of <unk> , further investigation is needed . 
