Sand (zinc mine operation)

The activity generating the emissions is zinc mine operation. The reference product is sand. The product "sand" represents an average type of sand extracted. Sand is co-produced with gravel where production of 1 kg represents 35% sand and 65% gravel. The largest use of construction sand and gravel is as aggregate for the production of concrete. The second largest use is as foundation material for highways, railways, runways, etc. Other major uses include aggregate for hot mix asphalt, and filler for highway, dam, and other back-filling. Smaller volumes of construction sand and gravel are used in plaster and gunite sands, snow and ice control, and railroad ballast. The reference product amount is 1. The cut-off classification is allocatable product. The activity type is ordinary ordinary transforming activity. Please refer to the ecoinvent documentation here for full details: https://ecoquery.ecoinvent.org/3.11/cutoff/dataset/21130/documentation.