diff --git a/frontend/src/js/misc/detect-hashes.js b/frontend/src/js/misc/detect-hashes.js
new file mode 100644
index 0000000..cffce2e
--- /dev/null
+++ b/frontend/src/js/misc/detect-hashes.js
@@ -0,0 +1,27 @@
+function detectHashes(obj) {
+  let Q = [ obj ];
+  let matches = {};
+
+  while (Q.length > 0) {
+    let item = Q.pop();
+
+    if (!item)
+      continue;
+
+    if (typeof(item) === 'string') {
+      // use regexes
+      let rx = /[a-f0-9]{32}\+[0-9]+/g;
+      for (let m = rx.exec(item); m; m = rx.exec(item))
+        matches[m[0]] = true;
+
+    } else if (typeof(item) === 'object') {
+      Object.keys(item).map(k => Q.push(item[k]));
+    }
+  }
+
+  matches = Object.keys(matches);
+
+  return matches;
+}
+
+export default detectHashes;
diff --git a/frontend/src/js/page/wb-process-view.js b/frontend/src/js/page/wb-process-view.js
index 8e05b3c..456f722 100644
--- a/frontend/src/js/page/wb-process-view.js
+++ b/frontend/src/js/page/wb-process-view.js
@@ -5,6 +5,7 @@ import makeArvadosRequest from 'make-arvados-request';
 import detectUuids from 'detect-uuids';
 import arvadosTypeName from 'arvados-type-name';
 import urlForObject from 'url-for-object';
+import detectHashes from 'detect-hashes';
 
 class WBProcessView extends Component {
   constructor(...args) {
@@ -29,7 +30,24 @@ class WBProcessView extends Component {
     });
     //prom = prom.then(xhr => (cont = xhr.response));
     prom = prom.then(() => {
+      let hashes = detectHashes([ req, cont ]);
+      let filters = [
+        [ 'portable_data_hash', 'in', hashes ]
+      ];
+      return makeArvadosRequest(arvHost, arvToken,
+        '/arvados/v1/collections?filters=' +
+        encodeURIComponent(JSON.stringify(filters)));
+    });
+    prom = prom.then(xhr => {
+      let colUuids = xhr.response['items'].map(item => item.uuid);
       let uuids = detectUuids([ req, cont ]);
+      let dict = {};
+      colUuids.map(u => (dict[u] = true));
+      uuids.map(u => (dict[u] = true));
+      return Object.keys(dict);
+    });
+    prom = prom.then(uuids => {
+      // let uuids = detectUuids([ req, cont ]);
       let objectTypes = uuids.map(u => arvadosTypeName(u.split('-')[1]) + 's');
       let objQueries = {};
       objectTypes.map(t => (objQueries[t] = []));