diff --git a/data/plugins/skill/herblore/herblore.rb b/data/plugins/skill/herblore/herblore.rb
index d47c0cdc..0aa4b445 100644
--- a/data/plugins/skill/herblore/herblore.rb
+++ b/data/plugins/skill/herblore/herblore.rb
@@ -31,15 +31,15 @@ on :message, :item_on_item do |ctx, player, message|
   secondary = message.target_id
   hash = HERBLORE_ITEM_ON_ITEM[primary]
 
-  if hash == nil
+  if hash.nil?
     secondary = message.id
     primary = message.target_id
     hash = HERBLORE_ITEM_ON_ITEM[primary]
   end
 
-  if hash != nil
+  unless hash.nil?
     method = hash[secondary]
-    if method != nil
+    unless method.nil?
       method.invoke(player, primary, secondary)
       ctx.break_handler_chain
     end
@@ -51,13 +51,13 @@ on :message, :first_item_option do |ctx, player, message|
   id = message.id
   method = HERBLORE_ITEM[id]
 
-  if method != nil
+  unless method.nil?
     method.invoke(player, id, message.slot)
     ctx.break_handler_chain
   end
   method = DRINK_ITEM[id]
 
-  if method != nil
+  unless method.nil?
     method.invoke(player, id, message.slot)
     ctx.break_handler_chain
   end
@@ -69,7 +69,7 @@ def append_herblore_item(method, key, secondary = -1)
     HERBLORE_ITEM[key] = method
   else
     hash = HERBLORE_ITEM_ON_ITEM[key]
-    hash = {} if hash == nil
+    hash = {} if hash.nil?
 
     hash[secondary] = method
     HERBLORE_ITEM_ON_ITEM[key] = hash
@@ -79,16 +79,17 @@ end
 # Utility method for checking if a player's inventory has an item of the specified id, with optionally the specified amount (1 by default), at the specified slot.
 def check_slot(player, slot, id, amount = 1)
   item = player.inventory.get(slot)
-  return (item != nil and item.id == id and item.amount >= amount)
+  return (!item.nil? and item.id == id and item.amount >= amount)
 end
 
 # Utility method for checking if a player's Herblore (maximum) level is at a required height. Also informs the player if this is not the case with use of the action 
 # variable, like so: "You need a Herblore level of at least #{required.to_s} to #{action}."
 def check_skill(player, required, action)
-  if required > player.skill_set.skill(HERBLORE_SKILL_ID).current_level
+  if (required > player.skill_set.get_skill(Skill::HERBLORE).current_level)
     player.send_message("You need a Herblore level of at least #{required} to #{action}.")
     return false
   end
+
   return true
 end
 
diff --git a/data/plugins/skill/magic/magic.rb b/data/plugins/skill/magic/magic.rb
index 0a08b5a6..60b1e939 100644
--- a/data/plugins/skill/magic/magic.rb
+++ b/data/plugins/skill/magic/magic.rb
@@ -45,7 +45,7 @@ class SpellAction < Action
   
   def check_skill
     required = @spell.level
-    if required > mob.skill_set.skill(MAGIC_SKILL_ID).maximum_level
+    if required > mob.skill_set.skill(Skill::MAGIC).maximum_level
       mob.send_message("You need a Magic level of at least #{required} to cast this spell.")
       return false
     end
@@ -63,9 +63,7 @@ class SpellAction < Action
       end
     end
     
-    elements.each do |element, amount|
-      element.check_remove(mob, amount, true)
-    end
+    elements.each { |element, amount| element.check_remove(mob, amount, true) }
     
     return true
   end
@@ -124,7 +122,7 @@ on :message, :magic_on_item do |ctx, player, message|
   spell = message.spell_id
   
   alch = ALCHEMY_SPELLS[spell]
-  if alch != nil
+  unless alch.nil?
     slot = message.slot
     item = player.inventory.get(slot)
     player.start_action(AlchemyAction.new(player, alch, slot, item))
@@ -133,7 +131,7 @@ on :message, :magic_on_item do |ctx, player, message|
   end
   
   ench = ENCHANT_SPELLS[message.id]
-  if ench != nil and ench.button == spell
+  if !ench.nil? and ench.button == spell
     slot = message.slot
     item = player.inventory.get(slot)
     player.start_action(EnchantAction.new(player, ench, slot, item, ENCHANT_ITEMS[item.id]))
@@ -146,16 +144,17 @@ on :message, :button do |ctx, player, message|
   button = message.widget_id
 
   tele = TELEPORT_SPELLS[button]
-  if tele != nil
+  unless tele.nil?
     player.start_action(TeleportingAction.new(player, tele))
     ctx.break_handler_chain
     return
   end
   
   conv = CONVERT_SPELLS[button]
-  if conv != nil
+  unless conv.nil?
     slots = bone_slots player
-    if slots.length == 0 then player.send_message("You cant convert these bones!") else player.start_action(ConvertingAction.new(player, conv, slots)) end
+
+    if slots.length == 0 then player.send_message("You can't convert these bones!") else player.start_action(ConvertingAction.new(player, conv, slots)) end
     ctx.break_handler_chain
   end
 end
\ No newline at end of file
diff --git a/data/plugins/skill/mining/mining.rb b/data/plugins/skill/mining/mining.rb
index 4393e210..e5b7670b 100644
--- a/data/plugins/skill/mining/mining.rb
+++ b/data/plugins/skill/mining/mining.rb
@@ -3,6 +3,7 @@ require 'java'
 java_import 'org.apollo.game.action.DistancedAction'
 java_import 'org.apollo.game.model.def.ItemDefinition'
 java_import 'org.apollo.game.model.entity.EquipmentConstants'
+java_import 'org.apollo.game.model.entity.Skill'
 
 PROSPECT_PULSES = 3
 ORE_SIZE = 1
@@ -20,14 +21,8 @@ class MiningAction < DistancedAction
   end
 
   def find_pickaxe
-    PICKAXE_IDS.each do |id|
-      weapon = mob.equipment.get(EquipmentConstants::WEAPON)
-      if (weapon != nil && weapon.id == id)
-        return PICKAXES[id]
-      end
-
-      return PICKAXES[id] if mob.inventory.contains(id)
-    end
+    weapon = mob.equipment.get(EquipmentConstants::WEAPON)
+    PICKAXE_IDS.each { |id| return PICKAXES[id] if (!weapon.nil? && weapon.id == id) || mob.inventory.contains(id) }
 
     return nil
   end
@@ -43,12 +38,12 @@ class MiningAction < DistancedAction
 
   def executeAction
     skills = mob.skill_set
-    level = skills.get_skill(MINING_SKILL_ID).current_level
+    level = skills.get_skill(Skill::MINING).current_level
     pickaxe = find_pickaxe
     mob.turn_to(@position)
 
     # verify the mob can mine with their pickaxe
-    unless (pickaxe != nil and level >= pickaxe.level)
+    unless (!pickaxe.nil? and level >= pickaxe.level)
       mob.send_message('You do not have a pickaxe for which you have the level to use.')
       stop
       return
@@ -74,7 +69,7 @@ class MiningAction < DistancedAction
           name = ore_def.name.sub(/ ore$/, '').downcase
 
           mob.send_message("You manage to mine some #{name}.", true)
-          skills.add_experience(MINING_SKILL_ID, ore.exp)
+          skills.add_experience(Skill::MINING, ore.exp)
           # TODO: expire the rock
         end
 
@@ -136,20 +131,23 @@ class ProspectingAction < DistancedAction
   def equals(other)
     return (get_class == other.get_class and @position == other.position and @ore == other.ore)
   end
+
 end
 
 on :message, :first_object_action do |ctx, mob, message|
   ore = ORES[message.id]
-  if ore != nil
+
+  unless ore.nil?
     mob.start_action(MiningAction.new(mob, message.position, ore))
   end
 end
 
 on :message, :second_object_action do |ctx, mob, message|
   ore = ORES[message.id]
-  if ore != nil
+
+  if !ore.nil?
     mob.start_action(ProspectingAction.new(mob, message.position, ore))
-  elsif EXPIRED_ORES[message.id] != nil
+  elsif !EXPIRED_ORES[message.id].nil?
     mob.start_action(ExpiredProspectingAction.new(mob, message.position))
   end
 end
\ No newline at end of file
diff --git a/data/plugins/skill/prayer/bury.rb b/data/plugins/skill/prayer/bury.rb
index 2c4815ad..620ef6ce 100644
--- a/data/plugins/skill/prayer/bury.rb
+++ b/data/plugins/skill/prayer/bury.rb
@@ -2,6 +2,7 @@ require 'java'
 
 java_import 'org.apollo.game.action.Action'
 java_import 'org.apollo.game.model.Animation'
+java_import 'org.apollo.game.model.entity.Skill'
 
 BURY_BONE_ANIMATION = 827
 BONES = {}
@@ -38,7 +39,7 @@ class BuryBoneAction < Action
         mob.play_animation(Animation.new(BURY_BONE_ANIMATION))
         mob.send_message('You bury the bones.')
         mob.inventory.reset(@slot)
-        mob.skill_set.add_experience(PRAYER_SKILL_ID, @bone.experience)
+        mob.skill_set.add_experience(Skill::PRAYER, @bone.experience)
       end
       stop
     end