diff --git a/1.3/Defs/SoundDefs/Rimatomics_General.xml b/1.3/Defs/SoundDefs/Rimatomics_General.xml
index 2089f89..a2951fc 100644
--- a/1.3/Defs/SoundDefs/Rimatomics_General.xml
+++ b/1.3/Defs/SoundDefs/Rimatomics_General.xml
@@ -427,7 +427,7 @@
   </SoundDef>
 
   <SoundDef>
-    <defName>transformerDischarge</defName>
+    <defName>core_hum</defName>
     <sustain>True</sustain>
     <context>MapOnly</context>
     <eventNames />
@@ -439,26 +439,51 @@
         <muteWhenPaused>True</muteWhenPaused>
         <grains>
           <li Class="AudioGrain_Clip">
-            <clipPath>Misc/transformerDischarge</clipPath>
+            <clipPath>hums/core_hum</clipPath>
           </li>
         </grains>
         <volumeRange>
-          <min>50</min>
-          <max>50</max>
+          <min>25</min>
+          <max>25</max>
         </volumeRange>
+        <pitchRange>
+          <min>1</min>
+          <max>1.015</max>
+        </pitchRange>
         <distRange>
           <min>0</min>
-          <max>70</max>
+          <max>20</max>
         </distRange>
       </li>
     </subSounds>
   </SoundDef>
 
   <SoundDef>
-    <defName>core_hum</defName>
+    <defName>Turbine</defName>  
+    <sustain>True</sustain>  
+    <context>MapOnly</context>
+    <priorityMode>PrioritizeNearest</priorityMode>  
+    <sustainStartSound>GeothermalPlant_Ambience_Start</sustainStartSound>  
+    <sustainStopSound>GeothermalPlant_Ambience_Stop</sustainStopSound>  
+    <subSounds>
+      <li>
+        <muteWhenPaused>True</muteWhenPaused>      
+        <grains>
+          <li Class="AudioGrain_Clip">
+            <clipPath>hums/turbine</clipPath>
+          </li>
+        </grains>      
+        <volumeRange>13~13</volumeRange>      
+        <pitchRange>1~1</pitchRange>
+        <distRange>0~30</distRange>
+      </li>
+    </subSounds>
+  </SoundDef>
+
+  <SoundDef>
+    <defName>transformer</defName>
     <sustain>True</sustain>
     <context>MapOnly</context>
-    <eventNames />
     <priorityMode>PrioritizeNearest</priorityMode>
     <sustainStartSound></sustainStartSound>
     <sustainStopSound></sustainStopSound>
@@ -467,30 +492,20 @@
         <muteWhenPaused>True</muteWhenPaused>
         <grains>
           <li Class="AudioGrain_Clip">
-            <clipPath>hums/core_hum</clipPath>
+            <clipPath>hums/tranny</clipPath>
           </li>
         </grains>
-        <volumeRange>
-          <min>25</min>
-          <max>25</max>
-        </volumeRange>
-        <pitchRange>
-          <min>1</min>
-          <max>1.015</max>
-        </pitchRange>
-        <distRange>
-          <min>0</min>
-          <max>20</max>
-        </distRange>
+        <volumeRange>50~50</volumeRange>
+        <pitchRange>1~1.015</pitchRange>
+        <distRange>0~20</distRange>
       </li>
     </subSounds>
   </SoundDef>
 
   <SoundDef>
-    <defName>transformer</defName>
+    <defName>transformerDischarge</defName>
     <sustain>True</sustain>
     <context>MapOnly</context>
-    <eventNames />
     <priorityMode>PrioritizeNearest</priorityMode>
     <sustainStartSound></sustainStartSound>
     <sustainStopSound></sustainStopSound>
@@ -499,21 +514,11 @@
         <muteWhenPaused>True</muteWhenPaused>
         <grains>
           <li Class="AudioGrain_Clip">
-            <clipPath>hums/tranny</clipPath>
+            <clipPath>Misc/transformerDischarge</clipPath>
           </li>
         </grains>
-        <volumeRange>
-          <min>25</min>
-          <max>25</max>
-        </volumeRange>
-        <pitchRange>
-          <min>1</min>
-          <max>1.015</max>
-        </pitchRange>
-        <distRange>
-          <min>0</min>
-          <max>20</max>
-        </distRange>
+        <volumeRange>50~50</volumeRange>
+        <distRange>0~70</distRange>
       </li>
     </subSounds>
   </SoundDef>
diff --git a/1.4/Defs/SoundDefs/Rimatomics_General.xml b/1.4/Defs/SoundDefs/Rimatomics_General.xml
index d5c8fcb..bf01b54 100644
--- a/1.4/Defs/SoundDefs/Rimatomics_General.xml
+++ b/1.4/Defs/SoundDefs/Rimatomics_General.xml
@@ -412,7 +412,7 @@
   </SoundDef>
 
   <SoundDef>
-    <defName>transformerDischarge</defName>
+    <defName>core_hum</defName>
     <sustain>True</sustain>
     <context>MapOnly</context>
     <eventNames />
@@ -424,26 +424,51 @@
         <muteWhenPaused>True</muteWhenPaused>
         <grains>
           <li Class="AudioGrain_Clip">
-            <clipPath>Misc/transformerDischarge</clipPath>
+            <clipPath>hums/core_hum</clipPath>
           </li>
         </grains>
         <volumeRange>
-          <min>50</min>
-          <max>50</max>
+          <min>25</min>
+          <max>25</max>
         </volumeRange>
+        <pitchRange>
+          <min>1</min>
+          <max>1.015</max>
+        </pitchRange>
         <distRange>
           <min>0</min>
-          <max>70</max>
+          <max>20</max>
         </distRange>
       </li>
     </subSounds>
   </SoundDef>
 
   <SoundDef>
-    <defName>core_hum</defName>
+    <defName>Turbine</defName>  
+    <sustain>True</sustain>  
+    <context>MapOnly</context>
+    <priorityMode>PrioritizeNearest</priorityMode>  
+    <sustainStartSound>GeothermalPlant_Ambience_Start</sustainStartSound>  
+    <sustainStopSound>GeothermalPlant_Ambience_Stop</sustainStopSound>  
+    <subSounds>
+      <li>
+        <muteWhenPaused>True</muteWhenPaused>      
+        <grains>
+          <li Class="AudioGrain_Clip">
+            <clipPath>hums/turbine</clipPath>
+          </li>
+        </grains>      
+        <volumeRange>13~13</volumeRange>      
+        <pitchRange>1~1</pitchRange>
+        <distRange>0~30</distRange>
+      </li>
+    </subSounds>
+  </SoundDef>
+
+  <SoundDef>
+    <defName>transformer</defName>
     <sustain>True</sustain>
     <context>MapOnly</context>
-    <eventNames />
     <priorityMode>PrioritizeNearest</priorityMode>
     <sustainStartSound></sustainStartSound>
     <sustainStopSound></sustainStopSound>
@@ -452,30 +477,20 @@
         <muteWhenPaused>True</muteWhenPaused>
         <grains>
           <li Class="AudioGrain_Clip">
-            <clipPath>hums/core_hum</clipPath>
+            <clipPath>hums/tranny</clipPath>
           </li>
         </grains>
-        <volumeRange>
-          <min>25</min>
-          <max>25</max>
-        </volumeRange>
-        <pitchRange>
-          <min>1</min>
-          <max>1.015</max>
-        </pitchRange>
-        <distRange>
-          <min>0</min>
-          <max>20</max>
-        </distRange>
+        <volumeRange>50~50</volumeRange>
+        <pitchRange>1~1.015</pitchRange>
+        <distRange>0~20</distRange>
       </li>
     </subSounds>
   </SoundDef>
 
   <SoundDef>
-    <defName>transformer</defName>
+    <defName>transformerDischarge</defName>
     <sustain>True</sustain>
     <context>MapOnly</context>
-    <eventNames />
     <priorityMode>PrioritizeNearest</priorityMode>
     <sustainStartSound></sustainStartSound>
     <sustainStopSound></sustainStopSound>
@@ -484,21 +499,11 @@
         <muteWhenPaused>True</muteWhenPaused>
         <grains>
           <li Class="AudioGrain_Clip">
-            <clipPath>hums/tranny</clipPath>
+            <clipPath>Misc/transformerDischarge</clipPath>
           </li>
         </grains>
-        <volumeRange>
-          <min>25</min>
-          <max>25</max>
-        </volumeRange>
-        <pitchRange>
-          <min>1</min>
-          <max>1.015</max>
-        </pitchRange>
-        <distRange>
-          <min>0</min>
-          <max>20</max>
-        </distRange>
+        <volumeRange>50~50</volumeRange>
+        <distRange>0~70</distRange>
       </li>
     </subSounds>
   </SoundDef>
diff --git a/Licenses.txt b/Licenses.txt
new file mode 100644
index 0000000..55d4821
--- /dev/null
+++ b/Licenses.txt
@@ -0,0 +1,4 @@
+======================== Licenses ==========================
+
+Includes a snippet of "Generator noise- Nuclear power plant" by Fredrik Johansson, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)
+https://www.soundsofchanges.eu/sound/generator-noise-nuclear-power-plant/
\ No newline at end of file
diff --git a/Sounds/hums/turbine.ogg b/Sounds/hums/turbine.ogg
new file mode 100644
index 0000000..193304a
Binary files /dev/null and b/Sounds/hums/turbine.ogg differ