diff --git a/mappings/net/minecraft/client/gui/container/GrindstoneGui.mapping b/mappings/net/minecraft/client/gui/container/GrindstoneGui.mapping
new file mode 100644
index 0000000000..53ff2e809d
--- /dev/null
+++ b/mappings/net/minecraft/client/gui/container/GrindstoneGui.mapping
@@ -0,0 +1,4 @@
+CLASS ctl net/minecraft/client/gui/container/GrindstoneGui
+	FIELD w GRINDSTONE_TEX Lpy;
+	FIELD x grindstone Lasr;
+	FIELD y playerInventory Laqi;
diff --git a/mappings/net/minecraft/container/GrindstoneContainer.mapping b/mappings/net/minecraft/container/GrindstoneContainer.mapping
new file mode 100644
index 0000000000..4223c19317
--- /dev/null
+++ b/mappings/net/minecraft/container/GrindstoneContainer.mapping
@@ -0,0 +1,6 @@
+CLASS asr net/minecraft/container/GrindstoneContainer
+	FIELD a resultInventory Laev;
+	FIELD f craftingInventory Laev;
+	FIELD g pos Let;
+	FIELD h world Lbaq;
+	METHOD a onContentChanged (Laev;)V
diff --git a/mappings/net/minecraft/item/MiningToolItem.mapping b/mappings/net/minecraft/item/MiningToolItem.mapping
index 9419dea18e..65f71b8b1b 100644
--- a/mappings/net/minecraft/item/MiningToolItem.mapping
+++ b/mappings/net/minecraft/item/MiningToolItem.mapping
@@ -1,5 +1,5 @@
 CLASS aum net/minecraft/item/MiningToolItem
-	FIELD a EFFECTIVE_BLOCKS Ljava/util/Set;
+	FIELD a effectiveBlocks Ljava/util/Set;
 	FIELD b efficiency F
 	FIELD c damage F
 	FIELD d swingSpeed F