diff --git a/Scripts/System/GridManager.cs b/Scripts/System/GridManager.cs
index 2d49ad1..d469623 100644
--- a/Scripts/System/GridManager.cs
+++ b/Scripts/System/GridManager.cs
@@ -51,7 +51,7 @@ public partial class GridManager : Node
         }
     }
 
-    public Node2D? GetBuildingAtCell(Vector2I cell, GridLayer layer = GridLayer.Building)
+    public Node2D? GetTileAtCell(Vector2I cell, GridLayer layer = GridLayer.Building)
     {
         return _layers[layer].TryGetValue(cell, out var data) ? data.Building : null;
     }
diff --git a/Scripts/System/PlacementManager.cs b/Scripts/System/PlacementManager.cs
index d47b5da..8b0456b 100644
--- a/Scripts/System/PlacementManager.cs
+++ b/Scripts/System/PlacementManager.cs
@@ -229,7 +229,7 @@ public partial class PlacementManager : Node2D
                 // Check if the area is occupied by under-construction tiles
                 var occupiedCells = GridUtils.GetOccupiedCells(_hoveredCell, building.Size, _currentRotation);
                 var isUnderConstruction = occupiedCells.Any(cell =>
-                    Grid.GetBuildingAtCell(cell, building.Layer) is BaseTile { IsConstructing: true });
+                    Grid.GetTileAtCell(cell, building.Layer) is BaseTile { IsConstructing: true });
 
                 if (!isUnderConstruction)
                     _cannotDeploySound.Play();
@@ -289,7 +289,7 @@ public partial class PlacementManager : Node2D
             !Grid.IsAreaFree(_hoveredCell, Vector2I.One, 0f))
         {
             // Right click to destroy from current layer
-            var building = Grid.GetBuildingAtCell(_hoveredCell);
+            var building = Grid.GetTileAtCell(_hoveredCell);
             if (building == null) return;
 
             // Find all cells occupied by this building
@@ -426,7 +426,7 @@ public static class GridManagerExtensions
     public static (Vector2I Position, Vector2I Size, float Rotation)? GetBuildingInfoAtCell(this GridManager grid,
         Vector2I cell, GridLayer layer)
     {
-        if (grid.GetBuildingAtCell(cell, layer) is { } building)
+        if (grid.GetTileAtCell(cell, layer) is { } building)
         {
             // Find the top-left position of the building
             for (int x = 0; x < 100; x++) // Arbitrary max size
@@ -434,16 +434,16 @@ public static class GridManagerExtensions
                 for (int y = 0; y < 100; y++)
                 {
                     var checkCell = new Vector2I(cell.X - x, cell.Y - y);
-                    if (grid.GetBuildingAtCell(checkCell, layer) == building)
+                    if (grid.GetTileAtCell(checkCell, layer) == building)
                     {
                         // Found the top-left corner, now find the size
                         var size = Vector2I.One;
                         // Search right
-                        while (grid.GetBuildingAtCell(new Vector2I(checkCell.X + size.X, checkCell.Y), layer) ==
+                        while (grid.GetTileAtCell(new Vector2I(checkCell.X + size.X, checkCell.Y), layer) ==
                                building)
                             size.X++;
                         // Search down
-                        while (grid.GetBuildingAtCell(new Vector2I(checkCell.X, checkCell.Y + size.Y), layer) ==
+                        while (grid.GetTileAtCell(new Vector2I(checkCell.X, checkCell.Y + size.Y), layer) ==
                                building)
                             size.Y++;
 
diff --git a/Scripts/Tiles/MinerTile.cs b/Scripts/Tiles/MinerTile.cs
index dc317e7..c7376ea 100644
--- a/Scripts/Tiles/MinerTile.cs
+++ b/Scripts/Tiles/MinerTile.cs
@@ -6,7 +6,7 @@ namespace AceFieldNewHorizon.Scripts.Tiles;
 public partial class MinerTile : BaseTile
 {
     [Export] public PackedScene ItemPickup { get; set; }
-    [Export] public string ItemToMine { get; set; } = "OreIron";
+    [Export] public string ItemToMine { get; set; }
     [Export] public int MiningRate = 1; // Items per second
 
     private Vector2I _gridPosition;
@@ -16,10 +16,29 @@ public partial class MinerTile : BaseTile
     {
         base._Ready();
         _gridPosition = GridUtils.WorldToGrid(Position);
+
+        var ground = Grid.GetTileAtCell(_gridPosition, GridLayer.Ground) as BaseTile;
+        if (ground == null)
+        {
+            GD.Print($"[Miner] Miner {GetInstanceId()} not found available resource...");
+            return;
+        }
+
+        ItemToMine = (ground.TileId) switch
+        {
+            "stone" => "stone",
+            "ore_iron" => "ore_iron",
+            _ => null
+        };
+        if (ItemToMine == null)
+            GD.Print($"[Miner] Miner {GetInstanceId()} not found available resource...");
     }
 
     public override void _Process(double delta)
     {
+        if (ItemToMine == null)
+            return;
+        
         // Don't mine if building is not completed
         if (!IsConstructed || ItemPickup == null)
             return;