diff --git a/Assets/Prefabs/Tunnel.prefab b/Assets/Prefabs/Tunnel.prefab
index 3262459..d513fa1 100644
--- a/Assets/Prefabs/Tunnel.prefab
+++ b/Assets/Prefabs/Tunnel.prefab
@@ -329,14 +329,14 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: d5a57f767e5e46a458fc5d3c628d0cbb, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Unity.Netcode.Runtime::Unity.Netcode.NetworkObject
-  GlobalObjectIdHash: 3924490917
-  InScenePlacedSourceGlobalObjectIdHash: 0
+  GlobalObjectIdHash: 3269291363
+  InScenePlacedSourceGlobalObjectIdHash: 3924490917
   DeferredDespawnTick: 0
   Ownership: 1
   AlwaysReplicateAsRoot: 0
   SynchronizeTransform: 1
   ActiveSceneSynchronization: 0
-  SceneMigrationSynchronization: 1
+  SceneMigrationSynchronization: 0
   SpawnWithObservers: 1
   DontDestroyWithOwner: 0
   AutoObjectParentSync: 1
diff --git a/Assets/Scripts/GameBase/UndergroundGenerator.cs b/Assets/Scripts/GameBase/UndergroundGenerator.cs
index c3bc7cd..6dffa09 100644
--- a/Assets/Scripts/GameBase/UndergroundGenerator.cs
+++ b/Assets/Scripts/GameBase/UndergroundGenerator.cs
@@ -12,7 +12,6 @@ public class UndergroundGenerator : NetworkBehaviour
     [SerializeField, Range(0, 1)] private float baseResourceThreshold = 0.8f;
 
     [Header("Depth Settings")]
-    [SerializeField] private bool increaseResourceWithDepth = true;
     [SerializeField] private float depthFactor = 0.005f; // 깊어질수록 임계값 감소 (자원 증가)
 
     [Header("Prefabs")]
diff --git a/Assets/Scripts/MineableBlock.cs b/Assets/Scripts/MineableBlock.cs
index 86b78c4..0bd1e71 100644
--- a/Assets/Scripts/MineableBlock.cs
+++ b/Assets/Scripts/MineableBlock.cs
@@ -88,14 +88,16 @@ public class MineableBlock : NetworkBehaviour, IDamageable
             _health.OnDeath += HandleDeath;
         }
     }
-
-    void OnDestroy()
+    public override void OnDestroy() // 1. override 키워드 추가
     {
         if (_health != null)
         {
             _health.OnDamaged -= HandleDamaged;
             _health.OnDeath -= HandleDeath;
         }
+
+        // 2. 부모 클래스 실행
+        base.OnDestroy();
     }
 
     public override void OnNetworkSpawn()
diff --git a/Assets/Scripts/Player/PlaceableBehavior.cs b/Assets/Scripts/Player/PlaceableBehavior.cs
index cd262cd..1d99f78 100644
--- a/Assets/Scripts/Player/PlaceableBehavior.cs
+++ b/Assets/Scripts/Player/PlaceableBehavior.cs
@@ -8,8 +8,6 @@ public class PlaceableBehavior : ItemBehavior
 {
     [Header("Placement Settings")]
     [SerializeField] private GameObject placeablePrefab;
-    [SerializeField] private bool requiresGround = true;
-    [SerializeField] private float placementRange = 5f;
 
     public override bool IsConsumable => true;
 
diff --git a/Assets/Scripts/Underground/MineableChunk.cs b/Assets/Scripts/Underground/MineableChunk.cs
index eeeaf11..b311f9d 100644
--- a/Assets/Scripts/Underground/MineableChunk.cs
+++ b/Assets/Scripts/Underground/MineableChunk.cs
@@ -11,10 +11,6 @@ using UnityEngine;
 [RequireComponent(typeof(MeshCollider))]
 public class MineableChunk : NetworkBehaviour, ChunkMeshBuilder.INeighborProvider
 {
-    [Header("Block Settings")]
-    [SerializeField] private byte normalBlockHealth = 100;
-    [SerializeField] private byte resourceBlockHealth = 150;
-
     [Header("Drop Settings")]
     [SerializeField] private ItemData normalDropItem;
     [SerializeField] private ItemData resourceDropItem;
@@ -48,7 +44,6 @@ public class MineableChunk : NetworkBehaviour, ChunkMeshBuilder.INeighborProvide
     // Local cache for quick access
     private ChunkState _localState;
     private ChunkCoord _chunkCoord;
-    private bool _isInitialized = false;
 
     // Components
     private MeshFilter _meshFilter;