diff --git a/changelog.txt b/changelog.txt
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--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,5 @@
+2017-04-04: removed obsolete pipeworks inventory images
+
 2017-03-18: Add image for sofar's inspector mod, and custom 
 sign-on/game-start progress bar images.  New, MUCH better technic 'lead 
 block' image, and new lead ore image to go with it.
diff --git a/pipeworks_accelerator_tube_inv.png b/pipeworks_accelerator_tube_inv.png
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diff --git a/pipeworks_detector_tube_inv.png b/pipeworks_detector_tube_inv.png
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diff --git a/pipeworks_mese_tube_inv.png b/pipeworks_mese_tube_inv.png
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diff --git a/pipeworks_sand_tube_inv.png b/pipeworks_sand_tube_inv.png
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diff --git a/pipeworks_teleport_tube_inv.png b/pipeworks_teleport_tube_inv.png
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