florida 1999 11 1 the mineral industry of this chapter has been prepared under a memorandum understanding between us geological survey and for collecting information on all nonfuel minerals in preliminary estimated value1 production was about 9 billion according to usgs more than 6 increase from that 1998 2 followed decrease 1997 continued an overall upward trend began 1994 following 4 years lower values third time past ranked fourth among 50 states total value which state accounted almost 5 be nation s leading phosphate rock mining producing six times as much next highest is produced only four terms crushed stone portland cement most important raw commodities listings are descending order
