diff --git a/data/prefabs/LAB_prisoner_study.fab b/data/prefabs/LAB_prisoner_study.fab
new file mode 100644
index 00000000..b9d4a724
--- /dev/null
+++ b/data/prefabs/LAB_prisoner_study.fab
@@ -0,0 +1,44 @@
+:g_global_restriction 2
+:g_tunneler
+:noguards
+:nostairs
+:noitems
+:notraps
+:priority 999
+
+:tunneler_orientation east
+:prison 3,2 0 0
+
+@p P
+Unfortunately it does seem that eldritch transmitters have no significant
+effect on non-Revgenunkim creatures, disregarding headaches, dizziness, and
+other mild inconveniences. -- KASDRUIN
+END POSTER
+
+% FABEDIT_REPLACE
+
+@0 p chamber_s1w1
+@1 p eldr_transmitter_2
+@2 p chamber_n1e1
+@3 p eldr_junction
+@4 p eldr_targeting
+@5 p generator_green
+@6 p chamber_s1e1
+@7 p chamber_e1w1
+@8 p chamber_n1w1
+@9 p chamber_p_n1w1
+@a p chamber_p_n1e1w1
+@b p chamber_p_n1s1
+@c p chamber_p_n1s1e1w1
+@d p chamber_n1s1
+@e p chamber_p_n1s1w1
+@f p chamber_p_n2s2w1e1
+@g p chamber_p_n1s1w2e1
+@z Cmons goblin ([prisoner_of]Necromancer [prm_status1]Daze)
+
+........1056
+..670p..127e
+..dzd0..134g
+..27cb..134g
+...2a9..167e
+........1852
diff --git a/data/props.tsv b/data/props.tsv
index 33ae21f3..e51e558b 100644
--- a/data/props.tsv
+++ b/data/props.tsv
@@ -225,6 +225,8 @@
 "chamber_p_n1s1w2"     	 "paralysis system"     	 '╡' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -
 "chamber_p_n2s2w1e1"   	 "paralysis system"     	 '╫' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -
 "chamber_p_n2s2"       	 "paralysis system"     	 '║' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -
+"chamber_p_n1s1w2e1"   	 "paralysis system"     	 '╪' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -
+"chamber_p_n1s1w1"     	 "paralysis system"     	 '┤' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -
 "eldr_junction"        	 "eldritch junction"    	 '╬' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -
 "eldr_transmitter_1"   	 "eldritch transmitter" 	 '/' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -
 "eldr_transmitter_2"   	 "eldritch transmitter" 	'\\' 	                        -  	 0x008c00 	 -        	 nay 	 - 	 -