diff --git a/public/locales/en.json b/public/locales/en.json
index 2d4d133..33e594d 100644
--- a/public/locales/en.json
+++ b/public/locales/en.json
@@ -86,6 +86,8 @@
 
   "pageNotFound": {
     "resultTitle": "Page not found",
+    "nyiTitle": "Not yet implemented",
+    "nyiSubTitle": "This feature will be coming soon!",
     "buttonGoBack": "Go back"
   },
 
diff --git a/src/global/AppRouter.tsx b/src/global/AppRouter.tsx
index 407fa23..31c6481 100644
--- a/src/global/AppRouter.tsx
+++ b/src/global/AppRouter.tsx
@@ -87,7 +87,9 @@
   { path: "/whatsnew", name: "whatsNew", component: <WhatsNewPage /> },
   { path: "/credits", name: "credits", component: <CreditsPage /> },
 
-  // TODO: remove this
+  // NYI and dev
+  { path: "/mining", name: "mining", component: <NotFoundPage nyi /> },
+  { path: "/network/statistics", name: "statistics", component: <NotFoundPage nyi /> },
   { path: "/dev", name: "dev", component: <DevPage /> }
 ];
 
diff --git a/src/global/ws/WebsocketConnection.ts b/src/global/ws/WebsocketConnection.ts
index 14492c4..9a1c6e9 100644
--- a/src/global/ws/WebsocketConnection.ts
+++ b/src/global/ws/WebsocketConnection.ts
@@ -31,7 +31,6 @@
 
   private forceClosing = false;
 
-  // TODO: automatically clean this up?
   private refreshThrottles: Record<string, (address: string) => void> = {};
 
   private subscriptions: Record<string, WSSubscription> = {};
diff --git a/src/krist/api/lookup.ts b/src/krist/api/lookup.ts
index 3d834ec..3e920f4 100644
--- a/src/krist/api/lookup.ts
+++ b/src/krist/api/lookup.ts
@@ -33,7 +33,6 @@
 
     return data.addresses;
   } catch (err) {
-    // TODO: proper error handling function for API requests
     console.error(err);
   }
 
diff --git a/src/pages/NotFoundPage.tsx b/src/pages/NotFoundPage.tsx
index f68adad..9f41ecb 100644
--- a/src/pages/NotFoundPage.tsx
+++ b/src/pages/NotFoundPage.tsx
@@ -5,21 +5,26 @@
 import { FrownOutlined } from "@ant-design/icons";
 
 import { useHistory } from "react-router-dom";
-import { useTranslation } from "react-i18next";
+import { useTFns } from "@utils/i18n";
 
 import { SmallResult } from "@comp/results/SmallResult";
 
-export function NotFoundPage(): JSX.Element {
-  const { t } = useTranslation();
+interface Props {
+  nyi?: boolean;
+}
+
+export function NotFoundPage({ nyi }: Props): JSX.Element {
+  const { tStr } = useTFns("pageNotFound.");
   const history = useHistory();
 
   return <SmallResult
     icon={<FrownOutlined />}
     status="error"
-    title={t("pageNotFound.resultTitle")}
+    title={nyi ? tStr("nyiTitle") : tStr("resultTitle")}
+    subTitle={nyi ? tStr("nyiSubTitle") : undefined}
     extra={(
       <Button type="primary" onClick={() => history.goBack()}>
-        {t("pageNotFound.buttonGoBack")}
+        {tStr("buttonGoBack")}
       </Button>
     )}
     fullPage