diff --git a/config/api/src/main/java/org/jboss/windup/config/IteratingRuleProvider.java b/config/api/src/main/java/org/jboss/windup/config/IteratingRuleProvider.java
new file mode 100644
index 0000000000..9864cb4a6c
--- /dev/null
+++ b/config/api/src/main/java/org/jboss/windup/config/IteratingRuleProvider.java
@@ -0,0 +1,46 @@
+package org.jboss.windup.config;
+
+import org.jboss.windup.config.operation.ruleelement.AbstractIterationOperation;
+import org.jboss.windup.graph.GraphContext;
+import org.jboss.windup.graph.model.WindupVertexFrame;
+import org.ocpsoft.rewrite.config.ConditionBuilder;
+import org.ocpsoft.rewrite.config.Configuration;
+import org.ocpsoft.rewrite.config.ConfigurationBuilder;
+import org.ocpsoft.rewrite.context.EvaluationContext;
+
+/**
+ * This provides a simplified way to extend {@link WindupRuleProvider} for cases where the rule simply needs to provide
+ * some query, and wants to execute a function over each resulting row.
+ * 
+ * @author jsightler <jesse.sightler@gmail.com>
+ */
+public abstract class IteratingRuleProvider<PAYLOADTYPE extends WindupVertexFrame> extends WindupRuleProvider
+{
+    /**
+     * Gets the condition for the {@link Configuration}'s "when" clause.
+     */
+    public abstract ConditionBuilder getCondition();
+
+    /**
+     * Perform this function for each {@link WindupVertexFrame} returned by the "when" clause.
+     */
+    public abstract void perform(GraphRewrite event, EvaluationContext context, PAYLOADTYPE payload);
+
+    private class IterationOperation extends AbstractIterationOperation<PAYLOADTYPE>
+    {
+        @Override
+        public void perform(GraphRewrite event, EvaluationContext context, PAYLOADTYPE payload)
+        {
+            IteratingRuleProvider.this.perform(event, context, payload);
+        }
+    }
+
+    @Override
+    public final Configuration getConfiguration(GraphContext context)
+    {
+        return ConfigurationBuilder.begin()
+                    .addRule()
+                    .when(getCondition())
+                    .perform(new IterationOperation());
+    }
+}
diff --git a/graph/api/src/main/java/org/jboss/windup/graph/GraphTypeManager.java b/graph/api/src/main/java/org/jboss/windup/graph/GraphTypeManager.java
index 2246668cb4..4f186a3954 100644
--- a/graph/api/src/main/java/org/jboss/windup/graph/GraphTypeManager.java
+++ b/graph/api/src/main/java/org/jboss/windup/graph/GraphTypeManager.java
@@ -76,7 +76,15 @@ public void addTypeToElement(Class<? extends VertexFrame> kind, Element element)
         String typeFieldName = typeHoldingTypeField.getAnnotation(TypeField.class).value();
         String typeValue = typeValueAnnotation.value();
 
-        // Store the type value in a delimited list.
+        for (TitanProperty existingTypes : v.getProperties(typeFieldName))
+        {
+            if (existingTypes.getValue().toString().equals(typeValue))
+            {
+                // this is already in the list, so just exit now
+                return;
+            }
+        }
+
         v.addProperty(typeFieldName, typeValue);
         addSuperclassType(kind, element);
     }
diff --git a/rules/app/java/src/main/java/org/jboss/windup/rules/apps/java/scan/provider/HashArchivesRuleProvider.java b/rules/app/java/src/main/java/org/jboss/windup/rules/apps/java/scan/provider/HashArchivesRuleProvider.java
new file mode 100644
index 0000000000..f5d200263e
--- /dev/null
+++ b/rules/app/java/src/main/java/org/jboss/windup/rules/apps/java/scan/provider/HashArchivesRuleProvider.java
@@ -0,0 +1,69 @@
+package org.jboss.windup.rules.apps.java.scan.provider;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.List;
+
+import org.apache.commons.codec.digest.DigestUtils;
+import org.jboss.windup.config.GraphRewrite;
+import org.jboss.windup.config.IteratingRuleProvider;
+import org.jboss.windup.config.RulePhase;
+import org.jboss.windup.config.WindupRuleProvider;
+import org.jboss.windup.config.query.Query;
+import org.jboss.windup.graph.model.ArchiveModel;
+import org.jboss.windup.util.exception.WindupException;
+import org.ocpsoft.rewrite.config.ConditionBuilder;
+import org.ocpsoft.rewrite.context.EvaluationContext;
+
+/**
+ * This RuleProvider gets the MD5 and SHA1 hash for each {@link ArchiveModel} in the graph.
+ * 
+ * @author jsightler <jesse.sightler@gmail.com>
+ * 
+ */
+public class HashArchivesRuleProvider extends IteratingRuleProvider<ArchiveModel>
+{
+
+    @Override
+    protected ConditionBuilder getCondition()
+    {
+        return Query.find(ArchiveModel.class);
+    }
+
+    @Override
+    public RulePhase getPhase()
+    {
+        return RulePhase.DISCOVERY;
+    }
+
+    @Override
+    public List<Class<? extends WindupRuleProvider>> getExecuteAfter()
+    {
+        return asClassList(UnzipArchivesToOutputRuleProvider.class);
+    }
+
+    @Override
+    protected void perform(GraphRewrite event, EvaluationContext context, ArchiveModel payload)
+    {
+        try (InputStream is = payload.asInputStream())
+        {
+            String md5 = DigestUtils.md5Hex(is);
+            payload.setMD5Hash(md5);
+        }
+        catch (IOException e)
+        {
+            throw new WindupException("Failed to read archive file at: " + payload.getFilePath() + " due to: "
+                        + e.getMessage(), e);
+        }
+        try (InputStream is = payload.asInputStream())
+        {
+            String sha1 = DigestUtils.sha1Hex(is);
+            payload.setSHA1Hash(sha1);
+        }
+        catch (IOException e)
+        {
+            throw new WindupException("Failed to read archive file at: " + payload.getFilePath() + " due to: "
+                        + e.getMessage(), e);
+        }
+    }
+}
diff --git a/tests/core/src/test/java/org/jboss/windup/tests/application/WindupArchitectureSmallBinaryModeTest.java b/tests/core/src/test/java/org/jboss/windup/tests/application/WindupArchitectureSmallBinaryModeTest.java
index 06e07d2c65..a4e53751a7 100644
--- a/tests/core/src/test/java/org/jboss/windup/tests/application/WindupArchitectureSmallBinaryModeTest.java
+++ b/tests/core/src/test/java/org/jboss/windup/tests/application/WindupArchitectureSmallBinaryModeTest.java
@@ -13,6 +13,9 @@
 import org.jboss.shrinkwrap.api.ShrinkWrap;
 import org.jboss.windup.engine.WindupProcessor;
 import org.jboss.windup.graph.GraphContext;
+import org.jboss.windup.graph.dao.ArchiveService;
+import org.jboss.windup.graph.model.ArchiveModel;
+import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -56,5 +59,20 @@ public static ForgeArchive getDeployment()
     public void testRunWindupTiny() throws Exception
     {
         super.runTest(processor, graphContext, "../../test-files/Windup1x-javaee-example-tiny.war", false);
+        validateArchiveHashes();
+    }
+
+    private void validateArchiveHashes() throws Exception
+    {
+        ArchiveService archiveService = new ArchiveService(graphContext);
+        int numberFound = 0;
+        for (ArchiveModel model : archiveService.findAll())
+        {
+            numberFound++;
+
+            Assert.assertEquals("c60bb0c51623a915cb4a9a90ba9ba70e", model.getMD5Hash());
+            Assert.assertEquals("1a1888023eff8629a9e55f023c8ecf63f69fad03", model.getSHA1Hash());
+        }
+        Assert.assertEquals(1, numberFound);
     }
 }