Rock Products

AUG 2019

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www.rockproducts.com ROCK products • August 2019 • 51 Aggregates Industry Almanac Aggregates Production The five leading states in the fourth quarter of 2018 were, in descending order of production, Texas, California, Pennsylvania, Ohio and Florida. Their combined total production for consump- tion was 182 Mt (30% of the U.S. total). The estimated total annual production for consumption of construction aggre- gates in 2018 increased, compared with that in 2017, in 34 of the 50 states for which estimates were made. The five leading states were, in descending order of total annual output for 2018, Texas, California, Florida, Pennsylvania and Ohio. Their combined total annual output was 716 Mt, an increase of 7% when compared with that of 2017. The estimated production for con- sumption of crushed stone in the fourth quarter of 2018 increased in seven of the nine geographic divisions compared with that sold or used in the fourth quarter of 2017. Production for consumption increased in 25 of the 45 states for which production estimates of crushed stone were made. The estimated production for consump- tion of construction sand and gravel in the fourth quarter of 2018 increased from fourth quarter 2017 levels in eight of the nine geographic divisions. Production for consumption increased in 21 of the 42 states for which produc- tion estimates of construction sand and gravel were made. Methodology The quarterly sample survey gen- erates production-for-consumption estimates by quarters, based on infor- mation reported voluntarily by a limited number of producing companies. In most quarters, a few companies may report amounts sold in the current quarter that differ greatly from the amounts reported in the previous year during the same quarter. This change in sales is almost never an indicator of the change in the demand in the state as a whole. The reason for a large change can be the opening or closing of an operation, weather or an external force that only the company or one of its operations experienced in that quarter. Previously reported data are occa- sionally revised, and the estimated quantities for the prior quarters are then recalculated. The latest release of the quarterly Mineral Industry Surveys contains the most recent estimated totals and supersedes previously pub- lished reports The Rock Products Market Composite Each year, the USGS releases its Mineral Commodity Summaries report. Pub- lished on an annual basis, this report provides industry data for more than 90 individual minerals and materials. For the Rock Products Market Compos- ite, we took data from six commodity segments – crushed stone, construc- tion sand and gravel, industrial sand, Industrial General Contractor Specializing in Mining Equipment Installation and Maintenance crmeyer.com 800.236.6650 Piping Concrete Ironworking Design/Build Millwrighting Boilermaking Offices Nationwide Building Construction Equipment Structures

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