diff --git a/library/lua/dfhack/buildings.lua b/library/lua/dfhack/buildings.lua
index ad82da89a..af9ad2605 100644
--- a/library/lua/dfhack/buildings.lua
+++ b/library/lua/dfhack/buildings.lua
@@ -178,7 +178,20 @@ local building_inputs = {
     },
     [df.building_type.Slab] = { { item_type=df.item_type.SLAB } },
     [df.building_type.NestBox] = { { has_tool_use=df.tool_uses.NEST_BOX, item_type=df.item_type.TOOL } },
-    [df.building_type.Hive] = { { has_tool_use=df.tool_uses.HIVE, item_type=df.item_type.TOOL } }
+    [df.building_type.Hive] = { { has_tool_use=df.tool_uses.HIVE, item_type=df.item_type.TOOL } },
+    [df.building_type.Rollers] = {
+        {
+            name='mechanism',
+            item_type=df.item_type.TRAPPARTS,
+            quantity=-1,
+            vector_id=df.job_item_vector_id.TRAPPARTS
+        },
+        {
+            name='chain',
+            item_type=df.item_type.CHAIN,
+            vector_id=df.job_item_vector_id.CHAIN
+        }
+    }
 }
 
 --[[ Furnace building input material table. ]]
@@ -318,7 +331,8 @@ local trap_inputs = {
             item_type=df.item_type.TRAPPARTS,
             vector_id=df.job_item_vector_id.TRAPPARTS
         }
-    }
+    },
+    [df.trap_type.TrackStop] = { { flags2={ building_material=true, non_economic=true } } }
 }
 
 --[[ Functions for lookup in tables. ]]
diff --git a/library/modules/Buildings.cpp b/library/modules/Buildings.cpp
index 65cf009f3..d2b3e3527 100644
--- a/library/modules/Buildings.cpp
+++ b/library/modules/Buildings.cpp
@@ -66,6 +66,7 @@ using namespace DFHack;
 #include "df/building_screw_pumpst.h"
 #include "df/building_water_wheelst.h"
 #include "df/building_wellst.h"
+#include "df/building_rollersst.h"
 
 using namespace df::enums;
 using df::global::ui;
@@ -289,6 +290,10 @@ bool Buildings::getCorrectSize(df::coord2d &size, df::coord2d &center,
         makeOneDim(size, center, direction);
         return true;
 
+    case Rollers:
+        makeOneDim(size, center, (direction&1) == 0);
+        return true;
+
     case WaterWheel:
         size = df::coord2d(3,3);
         makeOneDim(size, center, direction);
@@ -592,6 +597,12 @@ bool Buildings::setSize(df::building *bld, df::coord2d size, int direction)
             obj->direction = (df::screw_pump_direction)direction;
             break;
         }
+    case Rollers:
+        {
+            auto obj = (df::building_rollersst*)bld;
+            obj->direction = (df::screw_pump_direction)direction;
+            break;
+        }
     case Bridge:
         {
             auto obj = (df::building_bridgest*)bld;
@@ -881,7 +892,11 @@ bool Buildings::constructWithFilters(df::building *bld, std::vector<df::job_item
         if (items[i]->quantity < 0)
             items[i]->quantity = computeMaterialAmount(bld);
 
-        job->job_items.push_back(items[i]);
+        /* The game picks up explicitly listed items in reverse
+         * order, but processes filters straight. This reverses
+         * the order of filters so as to produce the same final
+         * contained_items ordering as the normal ui way. */
+        vector_insert_at(job->job_items, 0, items[i]);
 
         if (items[i]->item_type == item_type::BOULDER)
             rough = true;
diff --git a/library/xml b/library/xml
index 92dbeb626..b0d8e71dc 160000
--- a/library/xml
+++ b/library/xml
@@ -1 +1 @@
-Subproject commit 92dbeb6267a24a35babe3d5326801f2e8cfd22e1
+Subproject commit b0d8e71dc9f6e697409bd999801097acdc57fcd8