Which type of ceramics is used for making bricks?

The grid display in the image demonstrates the composing style called the

Natural minor half steps between scale degrees 3 and 4; 7 and 8 harmonic minor half steps between scale degrees 2 and 3; 5 and 6 ascending melodic minor half steps between scale degrees 2 and 3; 5 and 6; 7 and 8 major half steps between scale degrees 2 and 3; 7 and 8

In which quotes does the author use the word "chains" literally? in which quotes does she use the word figuratively?