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.
Drink 2 cups or less if you are pregnant. Green tea, because of it's caffeine level, can be unsafe for pregnant women and their babies. It can even lead to miscarriage if it is consumed in high doses. Always check with your doctor if you're unsure about consuming caffeinated beverages while pregnant.ome of the problems are due to the caffeine in the tea. Other problems are due to certain substances in the tea. This article will help you navigate when and how much tea you can have per day, even if you do suffer from some of the side effects.