NM. Materials

NM: Materials (very tentative)

Note: Chemical elements [denoted by chemical symbol] and compounds of two or more elements [also denoted by chemical symbol] can be captured by links to class M.

Materials that are produced, including those that are mined or grown, can be captured under EO9. There are, however, a handful that are distributed so widely within EO9 that it makes sense to treat them here:

b. brick

c. ceramics

g. glass

n. concrete

p. paper

s. plastic

w. wood

z. composite

f. Other artificial materials [Cutter] [AAT has separate class of waste materials, and lists some complex natural materials]

Natural materials such as stone (just R?) or cinder (igneous rocks) should be captured elsewhere also. Wattle would be captured synthetically.

We can also speak of:

h. Imaginary or hypothesized materials [Cutter]