Mines can only be claimed once a cycle.

src/engine/objects/Mine.java

@@ -46,6 +46,8 @@ public class Mine extends AbstractGameObject {
     private String zoneName;
     private Resource production;
     private boolean isActive = false;
+
+    public boolean wasClaimed = false;
     private float latitude;
     private float longitude;
     private float altitude;
@@ -526,6 +528,7 @@ public class Mine extends AbstractGameObject {
         mineBuilding.setRank(mineBuilding.getRank());
 		this.lastClaimer = null;
         this.setActive(false);
+        this.wasClaimed = true;
         return true;
     }
 

src/engine/workthreads/HourlyJobThread.java

@@ -103,6 +103,11 @@ public class HourlyJobThread implements Runnable {
 			for (Mine mine : mines) {
 				try {
 
+					// Mines can only be claimed once a cycle
+
+					if (mine.wasClaimed == true)
+						continue;;
+
 					// Open Errant Mines
 
 					if (mine.getOwningGuild().isErrant()) {