In such a fine powdered form, iron can burn, due to its increased surface area. The primary utility of iron filings is in the study and teaching of magnetism and electromagnetic fields. The substance makes impressive demonstrations when sprinkled on a white card placed on top of a permanent magnet, such as a bar magnet.
Here are a few of the specific jobs that are unsafe for pregnant women: 1  Farming. 2  Dry Cleaners. 3  Factory work where there is chemical exposure, too much heavy lifting, or a risk for falls. 4  Print Shops. 5  Craft shops that expose you to drying chemicals, paints, etc.6  Highway worker. 7  Toll Booth operators.8  Construction.obs that are unsafe for pregnant women include: 1  Any job where you are working with hazardous chemicals such as pesticides, toxic cleaning solutions, lead, second hand smoke, etc. 2  Any position where you are doing heavy lifting.
âMost babies are born healthy and most hazards can be avoided.âThere are very few prenatal factors that can harm a developing person.âPrenatal exposure to a dangerous substance is only harmful in the first trimester of the pregnancy.âResearch has proven that drinking alcohol (in any amount) during pregnancy is safe.ne mother was made of soft terry cloth, the other made of wire mesh 27 âMonkey Love Experimentsâ â Harlow's research showed that the need for affection created a stronger bond between mother and infant than did physical needs (food).