The chromium fixes the copper and arsenic to the wood. CCA can be separated into Type A, B, or C depending upon the relative proportions of metals (table I-1). The relative proportions range from 35-65%, 16-45%, 18-20% for chromium, arsenic, and copper, respectively.
The Civil Rights Act of 1964 ended racial segregation and outlawed most forms of discrimination in the workplace, schools, public facilities and separate requirements based on racialized distinctions, such as discriminatory voter registration requirements. The Civil Rights Act also clarified some of the rights of women.
A+E Networks. On this day in 1964, U.S. President Lyndon B. Johnson signs into law the historic Civil Rights Act in a nationally televised ceremony at the White House. In the landmark 1954 case Brown v. Board of Education, the U.S. Supreme Court ruled that racial segregation in schools was unconstitutional.