diff --git a/mwmbl/crawler/urls.py b/mwmbl/crawler/urls.py
index bad7616..3e50ff8 100644
--- a/mwmbl/crawler/urls.py
+++ b/mwmbl/crawler/urls.py
@@ -128,9 +128,9 @@ class URLDatabase:
                 updated = [FoundURL(*result) for result in results]
                 return updated
 
-    def get_urls(self, status: URLStatus, num_urls: int):
+    def get_urls(self, status: URLStatus, num_urls: int) -> list[FoundURL]:
         sql = f"""
-        SELECT url FROM urls
+        SELECT url, status, user_id_hash, score, updated FROM urls
         WHERE status = %(status)s
         ORDER BY score DESC
         LIMIT %(num_urls)s
@@ -140,7 +140,7 @@ class URLDatabase:
             cursor.execute(sql, {'status': status.value, 'num_urls': num_urls})
             results = cursor.fetchall()
 
-        return [result[0] for result in results]
+        return [FoundURL(url, user_id_hash, score, status, updated) for url, status, user_id_hash, score, updated in results]
 
     def get_url_scores(self, urls: list[str]) -> dict[str, float]:
         sql = f"""
diff --git a/mwmbl/url_queue.py b/mwmbl/url_queue.py
index 714cb10..ab0f1bc 100644
--- a/mwmbl/url_queue.py
+++ b/mwmbl/url_queue.py
@@ -25,6 +25,7 @@ MAX_URLS_PER_CORE_DOMAIN = 1000
 MAX_URLS_PER_TOP_DOMAIN = 100
 MAX_URLS_PER_OTHER_DOMAIN = 5
 MAX_OTHER_DOMAINS = 10000
+INITIALIZE_URLS = 10000
 
 
 random = Random(1)
@@ -41,13 +42,15 @@ class URLQueue:
         self._other_urls = defaultdict(dict)
         self._top_urls = defaultdict(dict)
         self._min_top_domains = min_top_domains
+        assert min_top_domains > 0, "Need a minimum greater than 0 to prevent a never-ending loop"
 
     def initialize(self):
+        logger.info(f"Initializing URL queue")
         with Database() as db:
             url_db = URLDatabase(db.connection)
-            urls = url_db.get_urls(URLStatus.NEW, MAX_QUEUE_SIZE * BATCH_SIZE)
-            self._queue_urls(urls)
-            logger.info(f"Initialized URL queue with {len(urls)} urls, current queue size: {self.num_queued_batches}")
+            found_urls = url_db.get_urls(URLStatus.NEW, INITIALIZE_URLS)
+            self._process_found_urls(found_urls)
+        logger.info(f"Initialized URL queue with {len(found_urls)} urls, current queue size: {self.num_queued_batches}")
 
     def update(self):
         num_processed = 0
@@ -70,7 +73,7 @@ class URLQueue:
 
         self._sort_urls(valid_urls)
         logger.info(f"Queue size: {self.num_queued_batches}")
-        while self.num_queued_batches < MAX_QUEUE_SIZE and len(self._top_urls) > self._min_top_domains:
+        while self.num_queued_batches < MAX_QUEUE_SIZE and len(self._top_urls) >= self._min_top_domains:
             total_top_urls = sum(len(urls) for urls in self._top_urls.values())
             logger.info(f"Total top URLs stored: {total_top_urls}")
 
@@ -95,8 +98,8 @@ class URLQueue:
         _sort_and_limit_urls(self._other_urls, MAX_OTHER_URLS)
 
         # Keep only the top "other" domains, ranked by the top item for that domain
-        top_other_urls = sorted(self._other_urls.items(), key=lambda x: x[1][0].score, reverse=True)[:MAX_OTHER_DOMAINS]
-        self._other_urls = defaultdict(list, dict(top_other_urls))
+        top_other_urls = sorted(self._other_urls.items(), key=lambda x: next(iter(x[1].values())), reverse=True)[:MAX_OTHER_DOMAINS]
+        self._other_urls = defaultdict(dict, dict(top_other_urls))
 
     def _batch_urls(self):
         urls = []
diff --git a/test/test_url_queue.py b/test/test_url_queue.py
index d6c15a2..0829c16 100644
--- a/test/test_url_queue.py
+++ b/test/test_url_queue.py
@@ -9,7 +9,7 @@ def test_url_queue_empties():
     new_item_queue = Queue()
     queued_batches = Queue()
 
-    url_queue = URLQueue(new_item_queue, queued_batches, min_top_domains=0)
+    url_queue = URLQueue(new_item_queue, queued_batches, min_top_domains=1)
     new_item_queue.put([FoundURL("https://google.com", "123", 10.0, URLStatus.NEW.value, datetime(2023, 1, 19))])
 
     url_queue.update()
@@ -17,3 +17,21 @@ def test_url_queue_empties():
     items = queued_batches.get(block=False)
 
     assert items == ["https://google.com"]
+
+
+def test_url_queue_multiple_puts():
+    new_item_queue = Queue()
+    queued_batches = Queue()
+
+    url_queue = URLQueue(new_item_queue, queued_batches, min_top_domains=1)
+    new_item_queue.put([FoundURL("https://google.com", "123", 10.0, URLStatus.NEW.value, datetime(2023, 1, 19))])
+    url_queue.update()
+
+    new_item_queue.put([FoundURL("https://www.supermemo.com", "124", 10.0, URLStatus.NEW.value, datetime(2023, 1, 20))])
+    url_queue.update()
+
+    items = queued_batches.get(block=False)
+    assert items == ["https://google.com"]
+
+    items_2 = queued_batches.get(block=False)
+    assert items_2 == ["https://www.supermemo.com"]