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.
Foods to avoid in pregnancy. 1  Cheeses to avoid in pregnancy. 2  Cheeses that are safe to eat in pregnancy. 3  PÃ¢tÃ© in pregnancy. 4  Avoid raw or partially cooked eggs if you're pregnant. 5  Raw or undercooked meat is risky in pregnancy. 6  Be cautious with cold cured meats in pregnancy. 7  Pre-packed meat is safe to eat if you're pregnant. Pre-packed meats such as ham and corned beef are safe to eat in pregnancy. Some websites based in other countries may suggest that you avoid pre-packed meats when pregnant, but this is not the advice in the UK. Liver can harm your unborn baby