diff --git a/src/paveit/datamodels/material.py b/src/paveit/datamodels/material.py
index 11fff45..1ec0199 100755
--- a/src/paveit/datamodels/material.py
+++ b/src/paveit/datamodels/material.py
@@ -110,6 +110,9 @@ class Aggregate(Material):
     
     norm = EnumField(NormEnum, default=NormEnum.TLGestein2018)
     name = StringField(required=True)
+    producer = StringField()
+    location = StringField()
+    batch_number = StringField()
     
     delivery_grain = LazyReferenceField(DeliveryGrain,
                                 required=True,