diff --git a/technic/depends.txt b/technic/depends.txt
index 1b76ab3..a66d81c 100644
--- a/technic/depends.txt
+++ b/technic/depends.txt
@@ -12,3 +12,4 @@ intllib?
 unified_inventory?
 vector_extras?
 dye?
+monitoring?
diff --git a/technic/machines/HV/quarry.lua b/technic/machines/HV/quarry.lua
index 4712a4e..3c34551 100644
--- a/technic/machines/HV/quarry.lua
+++ b/technic/machines/HV/quarry.lua
@@ -4,6 +4,15 @@ local S = technic.getter
 local tube_entry = "^pipeworks_tube_connection_metallic.png"
 local cable_entry = "^technic_cable_connection_overlay.png"
 
+local has_monitoring = minetest.get_modpath("monitoring")
+local metric_dig_count
+
+if has_monitoring then
+	metric_dig_count = monitoring.counter("technic_quarry_dig_count",
+		"number of technic quarry digs")
+
+end
+
 minetest.register_craft({
 	recipe = {
 		{"technic:carbon_plate",       "pipeworks:filter",       "technic:composite_plate"},
@@ -135,6 +144,9 @@ local function quarry_handle_purge(pos)
 end
 
 local function quarry_run(pos, node)
+	if metric_dig_count ~= nil then
+		metric_dig_count.inc()
+	end
 
 	local meta = minetest.get_meta(pos)
 	local owner = meta:get_string("owner")
diff --git a/technic/machines/switching_station.lua b/technic/machines/switching_station.lua
index 9b41e37..f9fe3fc 100644
--- a/technic/machines/switching_station.lua
+++ b/technic/machines/switching_station.lua
@@ -433,6 +433,7 @@ minetest.register_abm({
 				minetest.log("warning", "[technic] [+supply] switching station abm took " .. diff .. " us at " .. minetest.pos_to_string(pos))
 			end
 
+			return
 		end
 
 		-- If the PR supply is not enough for the RE demand we will discharge the batteries too
@@ -462,6 +463,7 @@ minetest.register_abm({
 				minetest.log("warning", "[technic] [-supply] switching station abm took " .. diff .. " us at " .. minetest.pos_to_string(pos))
 			end
 
+			return
 		end
 
 		-- If the PR+BA supply is not enough for the RE demand: Power only the batteries
@@ -486,6 +488,7 @@ minetest.register_abm({
 			minetest.log("warning", "[technic] switching station abm took " .. diff .. " us at " .. minetest.pos_to_string(pos))
 		end
 
+
 	end,
 })