diff --git a/Programs/monitor-system/data/datasource/miner.lua b/Programs/monitor-system/data/datasource/miner.lua
index 342705d..3ae01f5 100755
--- a/Programs/monitor-system/data/datasource/miner.lua
+++ b/Programs/monitor-system/data/datasource/miner.lua
@@ -2,7 +2,7 @@
 parser = require("utils.parser")
 inherits = require("utils.inherits")
 SingleBlock = require("data.datasource.single-block")
-local mock = require("data.mock.mock-multi-block")
+local mock = require("data.mock.mock-miner")
 --
 
 local Miner =
@@ -16,10 +16,10 @@ local Miner =
 
 function Miner:getName()
     local sensorInformation = self:getSensorInformation()
-    return parser.parseProblems(sensorInformation[1])
+    return parser.parseName(sensorInformation[1])
 end
 
-function Miner:getWoarkArea()
+function Miner:getWorkArea()
     local sensorInformation = self:getSensorInformation()
     return parser.parseWorkArea(sensorInformation[2])
 end
diff --git a/Programs/monitor-system/data/mock/miner.lua b/Programs/monitor-system/data/mock/mock-miner.lua
similarity index 100%
rename from Programs/monitor-system/data/mock/miner.lua
rename to Programs/monitor-system/data/mock/mock-miner.lua
diff --git a/Programs/monitor-system/domain/miner/get-miner-status-usecase.lua b/Programs/monitor-system/domain/miner/get-miner-status-usecase.lua
new file mode 100644
index 0000000..51c7377
--- /dev/null
+++ b/Programs/monitor-system/domain/miner/get-miner-status-usecase.lua
@@ -0,0 +1,5 @@
+local function exec(miner)
+    return miner.isMachineActive() and miner.hasWork() -- TODO: differenciate cases
+end
+
+return exec
diff --git a/Programs/monitor-system/domain/miner/list-miners-usecase.lua b/Programs/monitor-system/domain/miner/list-miners-usecase.lua
new file mode 100644
index 0000000..9727185
--- /dev/null
+++ b/Programs/monitor-system/domain/miner/list-miners-usecase.lua
@@ -0,0 +1,25 @@
+-- Import section
+event = require("event")
+local minerDatasource = require("data.datasource.miner")
+--
+local minerList = {}
+local newMiners = {}
+
+local function addToMinerList(_, address, machine)
+    if minerDatasource.getName(machine.getSensorInformation()) == "Multiblock Miner" then
+        if minerList[address] == nil then
+            newMiners[address] = machine
+        else
+            newMiners[address] = nil
+        end
+        minerList[address] = machine
+    end
+end
+
+event.listen("component_added", addToMinerList)
+
+local function exec()
+    return minerList, newMiners
+end
+
+return exec
diff --git a/Programs/monitor-system/domain/multiblock/get-multiblock-status-usecase.lua b/Programs/monitor-system/domain/multiblock/get-multiblock-status-usecase.lua
new file mode 100755
index 0000000..c4e115a
--- /dev/null
+++ b/Programs/monitor-system/domain/multiblock/get-multiblock-status-usecase.lua
@@ -0,0 +1,12 @@
+local function exec(multiblocks)
+    local statuses = {}
+    for _, multiblock in ipairs(multiblocks) do
+        statuses[multiblock.name] = {
+            problems = multiblock:getNumberOfProblems(),
+            efficiencyPercentage = multiblock:getEfficiencyPercentage()
+        }
+    end
+    return statuses
+end
+
+return exec
diff --git a/Programs/monitor-system/domain/multiblock/get-status-usecase.lua b/Programs/monitor-system/domain/multiblock/get-status-usecase.lua
deleted file mode 100755
index e69de29..0000000
diff --git a/Programs/monitor-system/init.lua b/Programs/monitor-system/init.lua
index 79b24b9..64ed417 100755
--- a/Programs/monitor-system/init.lua
+++ b/Programs/monitor-system/init.lua
@@ -15,25 +15,34 @@ local getEnergyStatus = require("domain.energy.get-energy-status-usecase")
 --
 
 local cleanroom = MultiBlock:new(multiBlockAddresses.cleanroom)
+cleanroom.name = "cleanroom"
 local cleanroomMachines = {}
 for _, address in pairs(cleanroomAddresses) do
     table.insert(cleanroomMachines, SingleBlock:new(address))
 end
 
 local EBF11 = MultiBlock:new(multiBlockAddresses.EBF11)
+EBF11.name = "EBF11"
 
 local multiblocks = {cleanroom, EBF11}
 
 local energyBuffer = EnergyProvider:new(energyBufferAddress.batteryBuffer1)
 
 local energyProducers = {}
+local multiblockStatuses = {}
 
 for i = 0, 100 do
     print(i)
     protectCleanroomRecipes(cleanroom, cleanroomMachines)
-    -- local multiblockStatuses = getMultiblockStatuses(multiblocks)
+    multiblockStatuses = getMultiblockStatuses(multiblocks)
     local energyStatus = getEnergyStatus(energyProducers, energyBuffer)
     os.sleep(0)
     i = i + 1
 end
-require('resources.sound.zelda-secret')()
+
+for multiblock, status in pairs(multiblockStatuses) do
+    print(multiblock .. ": \
+    problems: " .. status.problems .. "\
+    efficiency: " .. status.efficiencyPercentage)
+end
+require("resources.sound.zelda-secret")()