diff --git a/README.md b/README.md
index dced468..f8c1d30 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,11 @@
-# blade.ruby-lang.org
\ No newline at end of file
+# blade.ruby-lang.org
+
+## Import
+
+From `heroku run bash`
+
+```
+% heroku run bash
+Running bash on ⬢ blade-ruby-lang... up, run.7782
+~ $ ./bin/rails runner import.rb --list ruby-list --from 1001 --to 2000
+```
diff --git a/import.rb b/import.rb
index 81feb1a..77eb0a9 100644
--- a/import.rb
+++ b/import.rb
@@ -7,7 +7,15 @@
     opts.on('--to TO', Integer)
 end.parse!(into: params)
 
+list = params[:list]
+
 (params[:from]..params[:to]).each do |seq|
-    message = Message.from_s3(params[:list], seq)
-    message.save
+    begin
+        message = Message.from_s3(list, seq)
+        message.save
+    rescue ActiveRecord::RecordNotUnique
+        STDERR.puts("#{list}:#{seq} already exists")
+    rescue Aws::S3::Errors::NoSuchKey
+        STDERR.puts("#{list}:#{seq} doesn't exist")
+    end
 end