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The company opened a factory in Shanghai, China with 600 workers in the early 20th century to manufacture brush bristles to send to the Florence location for final production. [3] Makers of a highly advertised Pro-phy-lac-tic toothbrush , [ 4 ] the company was acquired by the Lambert Pharmaceutical Co. on February 19, 1930. [ 5 ]
Head lice infestation, also known as pediculosis capitis, is the infection of the head hair and scalp by the head louse (Pediculus humanus capitis). [6] Itching from lice bites is common. [ 5 ] During a person's first infection, the itch may not develop for up to six weeks. [ 5 ]
Procter & Gamble's late 1920s decision to locate its second east coast soap manufacturing plant in Baltimore reflects the strengths of Baltimore's industrial infrastructure in the early 20th century. Their choice of sites is particularly telling in light of Procter & Gamble's unique strengths as a corporation. Founded in 1837 as a family ...
The early 20th century saw multi-story factories influenced by high land costs and the need for vertical movement of goods. However, later designs, such as the one-story factories of the World War II era, became more prevalent due to their flexibility, ease of construction, and suitability for assembly lines.
British engineer and architect William Fairbairn is sometimes credited with the first designs for what he termed the shed principle possibly as early as 1827. In his "Treatise on Mills and Millwork", of 1863, Fairbairn stated that, "Contemporaneous with the architectural improvements in mills [from 1827], the shed principle lighted from the roof, or the "saw-tooth" system, came into operation.
Conk hairstyle. The conk was a hairstyle popular among African-American men from the 1920s up to the early-to-mid 1960s. [1] This hairstyle called for a man with naturally "kinky" hair to have it chemically straightened using a relaxer called congolene, an initially homemade hair straightener gel made from the extremely corrosive chemical lye which was often mixed with eggs and potatoes.
A plethora of new concepts to help implement and measure sustainability are becoming more widely accepted including the car-free movement, smart growth (more sustainable urban environments), life cycle assessment (the cradle to cradle analysis of resource use and environmental impact over the life cycle of a product or process), ecological ...
Women's wigs developed in a somewhat different way. They were worn from the 18th century onwards, although at first only surreptitiously. Full wigs in the 19th and early 20th century were not fashionable. They were often worn by old ladies who had lost their hair.